Functional Anatomy Indian Medical PG Practice Questions and MCQs
Practice Indian Medical PG questions for Functional Anatomy. These multiple choice questions (MCQs) cover important concepts and help you prepare for your exams.
Functional Anatomy Indian Medical PG Question 1: Which of the following is NOT a feature of Cushing's triad?
- A. Hypertension
- B. Bradycardia
- C. Irregular breathing
- D. Hypotension (Correct Answer)
Functional Anatomy Explanation: ***Hypotension***
- Cushing's triad is an indicator of **increased intracranial pressure (ICP)** and classically presents with **hypertension**, not hypotension.
- Hypotension would suggest a different problem, such as **spinal shock** or **hypovolemia**, which are not directly associated with Cushing's triad.
*Bradycardia*
- **Bradycardia** is a key component of Cushing's triad, resulting from vagal stimulation due to increased intracranial pressure.
- This reflex reduces heart rate in an attempt to maintain cerebral perfusion.
*Hypertension*
- **Hypertension**, specifically a widened pulse pressure, is a cardinal feature of Cushing's triad, caused by systemic vasoconstriction to overcome increased ICP and maintain **cerebral perfusion pressure**.
- It is a compensatory mechanism to push blood into the brain.
*Irregular breathing*
- **Irregular breathing patterns**, such as Cheyne-Stokes respiration or ataxic breathing, are characteristic of Cushing's triad, indicating brainstem compression [1].
- This irregular respiratory effort is due to direct pressure on the **respiratory centers** in the medulla [1].
Functional Anatomy Indian Medical PG Question 2: Glasgow coma scale of a patient with head injury who is confused, localizes to pain on the right side but shows abnormal flexion on the left side, and opens eyes only to painful stimuli on sternum:
- A. 11 (Correct Answer)
- B. 12
- C. 6
- D. 7
Functional Anatomy Explanation: ***11***
- The Glasgow Coma Scale (GCS) score is calculated by summing the scores for **Eye Response**, **Verbal Response**, and **Motor Response**.
- In this case: **Eye Response = 2** (opens eyes to painful stimuli), **Verbal Response = 4** (confused), and **Motor Response = 5** (localizes to pain on the right side).
- **Key principle**: When there is **asymmetric motor response**, the **best motor response** is used for GCS calculation, not the worse response or an average.
- Right side localizes to pain (M5) and left side shows abnormal flexion (M3), so we use M5.
- **Total GCS = E2 + V4 + M5 = 11**
*12*
- This score would require a better response in at least one GCS component than what is described.
- For a GCS of 12, the patient would need either: eyes opening to voice (E3), or obeys commands for motor (M6), or no confusion (V5).
- The given patient has E2 + V4 + M5, which totals to 11, not 12.
*6*
- A score of 6 indicates **severe neurological impairment**, much worse than the described patient.
- A GCS of 6 might include: no eye opening (E1) + incomprehensible sounds (V2) + abnormal flexion (M3) = 6.
- This is significantly worse than the patient's current state with localizing response and confused speech.
*7*
- A GCS of 7 also represents **severe neurological deficit**, though not as profound as a score of 6.
- This score would typically involve lower responses such as: E1 + V2 + M4 (withdrawal to pain) = 7, or E2 + V1 + M4 = 7.
- The described patient has better responses (E2 + V4 + M5 = 11) than this would indicate.
Functional Anatomy Indian Medical PG Question 3: All of the following are part of Glasgow Coma Scale except
- A. Motor response
- B. Eye opening
- C. Verbal response
- D. Deep tendon reflexes (Correct Answer)
Functional Anatomy Explanation: The **Glasgow Coma Scale (GCS)** assesses neurological function based on **eye opening**, **verbal response**, and **motor response** [1]. **Deep tendon reflexes** are part of a general neurological exam [2] but are not included in the GCS.
*Motor response*
- This is one of the three components of the **GCS** [1], assessing the patient's ability to move in response to commands or pain.
- It evaluates responses ranging from obeying commands to no motor response.
*Eye opening*
- This is a key component of the **GCS** [1], assessing the patient's level of consciousness based on their spontaneous or stimulated eye opening.
- Scores range from spontaneous eye opening to no eye opening.
*Verbal response*
- This is one of the three components of the **GCS** [1], evaluating the patient's ability to communicate verbally.
- It assesses responses from oriented conversation to no verbal response.
Functional Anatomy Indian Medical PG Question 4: Which thalamic nuclei can produce basal ganglia symptoms?
- A. Lateral dorsal
- B. Pulvinar
- C. Ventral anterior (Correct Answer)
- D. Intralaminar
Functional Anatomy Explanation: ***Ventral anterior***
- The **ventral anterior (VA)** and **ventral lateral (VL)** nuclei of the thalamus receive significant input from the **basal ganglia** and project to the motor cortex [1].
- Dysfunction in these nuclei can disrupt the basal ganglia's influence on motor control, leading to symptoms like **dyskinesia** or **rigidity** [1].
*Lateral dorsal*
- The **lateral dorsal nucleus** is primarily involved in **limbic system** functions and episodic memory.
- It does not have direct nor significant connections with the basal ganglia motor circuits that would produce typical basal ganglia symptoms.
*Pulvinar*
- The **pulvinar** is the largest thalamic nucleus, primarily involved in **visual processing**, attention, and eye movements.
- While it has extensive cortical connections, it is not directly involved in the motor circuits of the basal ganglia.
*Intralaminar*
- The **intralaminar nuclei** (e.g., centromedian and parafascicular) receive input from the basal ganglia but primarily project diffusely to the cerebral cortex and are involved in **arousal** and consciousness [2].
- While they modulate cortical activity, their dysfunction typically wouldn't produce the classic motor symptoms associated with basal ganglia disorders.
Functional Anatomy Indian Medical PG Question 5: Name the muscles being used in climbing a tree as shown in the figure.
- A. Latissimus dorsi and pectoralis major (Correct Answer)
- B. Teres major and pectoralis major
- C. Teres minor and pectoralis minor
- D. External oblique and pectoralis major
Functional Anatomy Explanation: ***Latissimus dorsi and pectoralis major***
- The **latissimus dorsi** is a large, powerful muscle responsible for adduction, extension, and internal rotation of the arm, all crucial for pulling the body upward during climbing.
- The **pectoralis major** is a large, fan-shaped muscle that helps with adduction, flexion, and internal rotation of the humerus, also vital for pulling oneself up against gravity.
*Teres major and pectoralis major*
- While the **pectoralis major** is involved, the **teres major** is a smaller muscle that primarily assists the latissimus dorsi in extension, adduction, and internal rotation of the humerus, but is not as dominant in the main pulling action as the latissimus dorsi.
- The primary pulling force comes from larger muscles, making the teres major a less significant contributor to the overall climbing action.
*Teres minor and pectoralis minor*
- The **teres minor** is part of the rotator cuff and primarily functions in external rotation of the humerus, which is not a primary movement for pulling oneself up.
- The **pectoralis minor** is a small, thin muscle that stabilizes the scapula and depresses the shoulder; it does not directly contribute to the powerful pulling action needed for climbing.
*External oblique and pectoralis major*
- The **external oblique** is an abdominal muscle involved in trunk rotation and flexion, providing core stability but not directly contributing to the primary upper body pulling motion for climbing.
- While the **pectoralis major** is correctly identified, the external oblique is not a primary muscle used for the upward pulling motion in climbing.
More Functional Anatomy Indian Medical PG questions available in the OnCourse app. Practice MCQs, flashcards, and get detailed explanations.
