Anatomy
1 questionsWhich is the earliest secondary ossification center to develop chronologically?
NEET-PG 2013 - Anatomy NEET-PG Practice Questions and MCQs
Question 491: Which is the earliest secondary ossification center to develop chronologically?
- A. Lower end of femur (Correct Answer)
- B. Upper end of humerus
- C. Lower end of fibula
- D. Upper end of tibia
Explanation: ***Lower end of femur*** - The **distal femoral epiphysis** is typically the first secondary ossification center to appear, often present at birth or shortly before [1]. - Its presence at birth is an indicator of **fetal maturity**, making it a key developmental landmark [1]. *Upper end of humerus* - The **proximal humeral epiphysis** typically ossifies around 6 months of age, significantly later than the distal femur. - This center contributes to the growth of the humeral head and greater tubercle. *Lower end of fibula* - The **distal fibular epiphysis** appears around the first year of life, after both the distal femur and proximal humerus. - It forms part of the ankle joint and contributes to its stability. *Upper end of tibia* - The **proximal tibial epiphysis** typically ossifies around 6-12 months of age, well after the distal femur. - This center is crucial for the growth of the upper tibia and knee joint development.
Community Medicine
2 questionsHighest level of health care system in India -
Most basic level of Health Care System in India -
NEET-PG 2013 - Community Medicine NEET-PG Practice Questions and MCQs
Question 491: Highest level of health care system in India -
- A. Primary health care
- B. Secondary health care
- C. Tertiary health care (Correct Answer)
- D. All are same
Explanation: ***Tertiary health care*** - **Tertiary healthcare** represents the highest level within the healthcare system, offering highly specialized and technologically advanced medical services. - It includes facilities like **super-specialty hospitals** and research centers that provide treatments for complex and rare diseases, often requiring referral from lower levels of care. *Primary health care* - **Primary healthcare** is the first point of contact for individuals, families, and communities with the healthcare system, focusing on prevention, health promotion, and basic curative care. - It is delivered at facilities such as **Sub-centers** and **Primary Health Centers (PHCs)**, addressing common health problems. *Secondary health care* - **Secondary healthcare** provides more specialized medical care than primary care, often involving consultation with specialists and access to basic diagnostic and treatment services. - It is typically delivered at **Community Health Centers (CHCs)** and district hospitals, serving as a referral point from primary care. *All are same* - The different levels of healthcare (primary, secondary, and tertiary) represent a **hierarchical structure** with distinct roles, functions, and levels of specialization. - They are designed to provide a continuum of care, with patients being referred between levels based on their medical needs, ensuring that "all are same" is incorrect.
Question 492: Most basic level of Health Care System in India -
- A. Primary health care (Correct Answer)
- B. Secondary health care
- C. Tertiary health care
- D. All are same
Explanation: ***Primary health care*** - **Primary health care** is the first point of contact for individuals with the health system, providing essential and accessible healthcare services - In India, it is delivered through **sub-centers** (the most peripheral unit) and **primary health centers (PHCs)**, forming the **most basic and widespread layer** of the healthcare system - This represents the foundational level of care, focusing on preventive, promotive, and basic curative services *Secondary health care* - **Secondary health care** involves more specialized services, typically provided in district hospitals or community health centers (CHCs) - It serves as a referral point from primary care for patients requiring diagnostics, specialist consultations, or inpatient care - This is a **higher level of care** than primary, not the most basic level *Tertiary health care* - **Tertiary health care** offers highly specialized and advanced medical care, often involving complex procedures, specialized investigations, and management of rare or severe diseases - Provided in medical colleges, research institutes, and super-specialty hospitals - This represents the **highest and most advanced level** of the healthcare system, not the most basic *All are same* - This option is incorrect because the Indian healthcare system is structured in a **hierarchical manner** with distinct levels - Each level (primary, secondary, and tertiary) provides different services, varying in complexity, specialization, and accessibility - Primary care is clearly the most basic level, while secondary and tertiary represent progressively higher levels of specialization
Forensic Medicine
3 questionsWhat is the time limit for exhumation in India?
Which of the following statements about exit wounds of a bullet in bone is correct?
Which of the following tests is NOT used in the medico-legal investigation of suspected infanticide?
NEET-PG 2013 - Forensic Medicine NEET-PG Practice Questions and MCQs
Question 491: What is the time limit for exhumation in India?
- A. One year
- B. Ten years
- C. One month
- D. No specific time limit (Correct Answer)
Explanation: ***No specific time limit*** - In India, there is **no specific legal time limit** for exhumation; it is subject to the discretion of a magistrate or judicial authority. - Exhumation is ordered if there is a **reasonable suspicion or compelling grounds** to believe that an examination of the remains will provide crucial evidence for a criminal investigation. *One month* - This is **incorrect** as there is no such restrictive time frame for exhumation in Indian law. - Exhumations are ordered based on the investigative needs, not arbitrary short deadlines. *One year* - This time limit is **not stipulated** in Indian legal provisions for exhumation. - The decision to exhume is made on a case-by-case basis, considering factors like the preservation status of the body and the potential evidentiary value. *Ten years* - There is **no fixed legal period** like ten years limiting exhumations in India. - The decaying state of a body over an extended period might reduce its forensic value, but technically, exhumation can still be ordered if deemed necessary for justice.
Question 492: Which of the following statements about exit wounds of a bullet in bone is correct?
- A. Abrasion collar
- B. Smaller than entry wound
- C. Presence of COHb
- D. Bevelled (Correct Answer)
Explanation: ***Bevelled*** - Beveling (internal beveling) is the **characteristic feature** of exit wounds in bone, particularly in skull fractures - The exit wound shows a **cone-shaped defect** with the **wider opening on the exit side** and the narrow end toward the entry side - This "coning effect" occurs because bone fragments are **pushed outward** as the bullet exits, creating a larger, more irregular defect - **Definitive forensic finding** for distinguishing entry from exit wounds in bone *Smaller than entry wound* - This is **incorrect** for bone wounds - Exit wounds in bone are typically **larger and more irregular** than entry wounds, not smaller - The entry wound in bone appears as a small, punched-in defect with **external beveling** (narrow on outside, wider on inside) - Exit wounds are larger due to the bullet's tumbling and fragmentation, plus outward force creating the beveling *Abrasion collar* - An **abrasion collar** (marginal abrasion) is characteristic of **entry wounds in skin**, not bone - Occurs when skin is pressed inward and abraded by the bullet at entry - **Not present** around exit wounds because skin is pushed outward, causing irregular tearing - This feature applies to soft tissue, not bone wound characteristics *Presence of COHb* - **Carboxyhemoglobin (COHb)** indicates a **close-range gunshot entry wound** - Results from carbon monoxide in gunpowder gases deposited in the wound tract - Associated with **entry wounds only**, particularly at close range or contact wounds - Not relevant to exit wound characteristics
Question 493: Which of the following tests is NOT used in the medico-legal investigation of suspected infanticide?
- A. Ploucquet test
- B. Fodere's test
- C. Widal test (Correct Answer)
- D. Hydrostatic test
Explanation: ***Widal test*** - The **Widal test** is a serological test used to diagnose **typhoid fever** by detecting antibodies against *Salmonella typhi* antigens, not for infanticide. - It assesses the presence of **O and H agglutinins** in the patient's serum after exposure to the bacteria. *Ploucquet test* - The **Ploucquet test** assesses the **weight of the lungs** relative to the total body weight to determine if the infant has breathed. - In a stillborn infant, the ratio of lung weight to body weight is typically lower than in a liveborn infant who has breathed. *Fodere's test* - **Fodere's test**, also known as the **gastrointestinal air test**, examines the presence of air in the **gastrointestinal tract** of an infant. - The presence of air indicates that the infant has **breathed and swallowed**, suggesting live birth. *Hydrostatic test* - The **hydrostatic test** (or lung float test) involves placing the infant's lungs in water to determine if they **float or sink**. - **Floating lungs** indicate the presence of air, suggesting the infant took a breath, while **sinking lungs** suggest no respiration.
Microbiology
1 questionsWhich organism is responsible for producing Draughtsman (Concentric Rings) on culture?
NEET-PG 2013 - Microbiology NEET-PG Practice Questions and MCQs
Question 491: Which organism is responsible for producing Draughtsman (Concentric Rings) on culture?
- A. Bacillus anthracis (Correct Answer)
- B. B. pertussis
- C. H. ducreyi
- D. Pneumococci
Explanation: ***Bacillus anthracis*** - *Bacillus anthracis* is the organism responsible for producing the characteristic **"Draughtsman" or "Concentric Rings"** pattern on culture media - On blood agar, colonies show a **"Medusa head"** appearance with **concentric rings** and **comma-shaped projections** radiating outward from the center - This distinctive morphology results from chains of bacilli growing in parallel alignment, creating the characteristic pattern - The colonies are typically **non-hemolytic, grey-white, and have irregular edges** *H. ducreyi* - *Haemophilus ducreyi* causes **chancroid** and is difficult to culture - Colonies appear as **small, grey-yellow, translucent** with a **cohesive ("school of fish")** appearance when pushed across the agar - Does not produce concentric rings *B. pertussis* - *Bordetella pertussis* grows on **Bordet-Gengou agar** or **Regan-Lowe medium** - Colonies have a characteristic **"mercury droplet"** or **"bisected pearl"** appearance due to their smooth, shiny, convex morphology - This is completely different from the Draughtsman pattern *Pneumococci* - *Streptococcus pneumoniae* produces **alpha-hemolytic colonies** on blood agar - Colonies are **small, dome-shaped, mucoid** with a **central umbilication** (draughtsman or checker-piece appearance refers to the depression, not concentric rings) - The "draughtsman" term when applied to pneumococci refers to the flattened checker-piece shape, not the concentric ring pattern of *B. anthracis*
Pharmacology
1 questionsDrug that binds bile acids in the intestine and prevents their return to liver via the enterohepatic circulation?
NEET-PG 2013 - Pharmacology NEET-PG Practice Questions and MCQs
Question 491: Drug that binds bile acids in the intestine and prevents their return to liver via the enterohepatic circulation?
- A. Niacin
- B. Fenofibrate
- C. Cholestyramine (Correct Answer)
- D. Gugulipid
Explanation: ***Cholestyramine*** - **Cholestyramine** is a **bile acid-binding resin** that sequesters bile acids in the intestine, preventing their reabsorption. - This interruption of the **enterohepatic circulation** leads to increased synthesis of new bile acids from cholesterol in the liver, thus lowering plasma LDL cholesterol. *Niacin* - **Niacin (nicotinic acid)** reduces the hepatic synthesis and secretion of **VLDL**, which in turn lowers LDL and triglyceride levels. - It works primarily through mechanisms related to fat metabolism in the liver and adipose tissue, not direct bile acid binding in the intestine. *Fenofibrate* - **Fenofibrate** is a **PPAR-α agonist** that primarily reduces triglyceride levels by increasing fatty acid oxidation and lipoprotein lipase activity, and secondarily increases HDL. - Its main action is on lipid metabolism in the liver and peripheral tissues, not by binding bile acids in the gut. *Gugulipid* - **Gugulipid** is a phytosterol derived from the guggul tree, sometimes used in traditional medicine for cholesterol management. - Its purported mechanism involves increasing **bile acid excretion** and inhibiting cholesterol biosynthesis, but it does not directly bind bile acids in the same manner as resins like cholestyramine.
Physiology
1 questionsWhich of the following is responsible for localization of sound ?
NEET-PG 2013 - Physiology NEET-PG Practice Questions and MCQs
Question 491: Which of the following is responsible for localization of sound ?
- A. Cochlear nerve
- B. Cochlea
- C. Superior olivary nucleus (Correct Answer)
- D. Cochlear nuclei
Explanation: ***Superior olivary nucleus*** - The **superior olivary nucleus** is the first site in the auditory pathway where binaural (two-ear) input is integrated, which is crucial for **sound localization**. - It processes **interaural time differences (ITDs)** and **interaural level differences (ILDs)** to determine the horizontal position of a sound source. *Cochlear nerve* - The **cochlear nerve** transmits auditory information from the cochlea to the brainstem but does not perform the initial processing for sound localization. - It carries impulses for both ears independently, which are then integrated at higher centers. *Cochlea* - The **cochlea** is responsible for converting sound vibrations into electrical signals (transduction), encoding properties like pitch and loudness, but not directly for sound localization. - It acts as a mechanical analyzer, separating sound into its frequency components. *Cochlear nuclei* - The **cochlear nuclei** receive input solely from the ipsilateral cochlear nerve and primarily process monaural (one-ear) auditory information. - While they are a crucial relay in the auditory pathway, they do not integrate binaural cues for sound localization.
Surgery
1 questionsIn the context of triage, what color would be assigned to a moribund patient?
NEET-PG 2013 - Surgery NEET-PG Practice Questions and MCQs
Question 491: In the context of triage, what color would be assigned to a moribund patient?
- A. Red
- B. Black (Correct Answer)
- C. Yellow
- D. Green
Explanation: ***Black*** - A **black tag** is assigned to patients who are **deceased** or have injuries so severe that survival is unlikely, and resources would be better used on patients with a higher chance of survival. - A **moribund patient** is in a dying state or near death, fitting the criteria for a black tag in triage. *Red* - **Red tags** are for patients with **immediate life-threatening injuries** who have a high probability of survival with prompt intervention. - These patients require immediate medical attention to stabilize fundamental physiological functions. *Yellow* - **Yellow tags** are assigned to patients with **serious injuries** that are not immediately life-threatening. - They require medical attention within a few hours, but their condition is stable enough to wait after red-tagged patients. *Green* - **Green tags** are for patients with **minor injuries** that are non-life-threatening and can wait for medical attention. - These individuals are often referred to as "walking wounded" and can typically care for themselves or assist others.