Cardiovascular — Flashcards

Flashcard 751: The fraction of blood volume occupied by plasma = _____

Answer: 1 - hematocrit

Flashcard 752: Does tetrodotoxin cause or prevent depolarization? _____

Answer: Prevent

Flashcard 753: Which type of sensory receptor senses dynamic, light touch, and position sense?_____

Answer: Meissner corpuscles

Flashcard 754: Ovarian follicular growth is fastest during the _____ week of the follicular phase

Answer: 2nd

Flashcard 755: Which hormone is primarily responsible for the closure of epiphyseal plates (cessation of pubertal growth) in both males and females?

Answer: Estrogen

Extra: In both males and females, estrogen is the primary hormone responsible for the closure of epiphyseal plates. In males, testosterone is converted to estrogen by the enzyme aromatase to exert this effect. Clinical Correlation: Individuals with aromatase deficiency or estrogen receptor resistance fail to close their epiphyseal plates and continue to grow into adulthood, resulting in tall stature.

Flashcard 756: What change in heart rate is expected during the valsalva maneuver if the patient's baroreceptor reflex is intact?_____

Answer: Increased HR

Flashcard 757: Which androgen is responsible for libido?_____

Answer: Testosterone

Flashcard 758: The resting membrane potential of cardiac cells is determined primarily by _____ ions

Answer: potassium (K+)

Flashcard 759: Thyroid hormone stimulates upregulation of _____ receptors in the heart

Answer: B1

Flashcard 760: What is the effect of ghrelin on appetite? _____

Answer: Increased