Cardiovascular — Flashcards

Flashcard 401: Testosterone acts via an intratesticular _____ mechanism to reinforce the spermatogenic effects of FSH in Sertoli cells

Answer: paracrine

Flashcard 402: What effect does excessive I- intake have on thyroid hormone secretion? _____

Answer: Decreases secretion (Wolff-Chaikoff effect)

Extra: * Excessive iodine directly inhibits thyroid peroxidase, preventing organification of thyroid hormone -> hypothyroid effect

Flashcard 403: How does libido change in elderly males? _____

Answer: No change

Flashcard 404: Hypothyroidism may cause hypertension due to increased _____ *bonus: what causes the latter cloze?

Answer: systemic vascular resistance

Flashcard 405: What is the effect of insulin on glucagon secretion? _____

Answer: Decreased

Extra: Within the Islets of Langerhans: - **Insulin** (from β cells) inhibits **glucagon** (from α cells). - **Glucagon** (from α cells) stimulates **insulin** and **somatostatin**. - **Somatostatin** (from δ cells) inhibits **insulin** and **glucagon**.

Flashcard 406: From the lymph, chylomicrons enter the _____ via the thoracic duct

Answer: blood

Flashcard 407: Heart failure, hypotension, and shock may be caused by _____calcemia

Answer: hypo

Flashcard 408: Type _____ muscle fibers are increased in proportion after endurance training

Answer: I

Flashcard 409: Aqueous humor from the _____ chamber enters the _____ chamber

Answer: posterior

Flashcard 410: ADH activation of the _____ receptor on vascular smooth muscle causes vasoconstriction and increased blood pressure

Answer: V1

Extra: Sketchy Pharmacology: Thyroid, Pituitary, & Adrenal