Cardiovascular — Flashcards

Flashcard 91: After fibrin is formed from fibrinogen, it is _____ by factor XIII yielding a stable platelet-fibrin thrombus

Answer: cross-linked

Flashcard 92: What causes the **pituitary gland enlargement** during pregnancy that predisposes to Sheehan syndrome? _____

Answer: Increased estrogen (causing hyperplasia of prolactin-secreting cells)

Extra: Estrogen stimulates hyperplasia of lactotrophs (prolactin-secreting cells) during pregnancy. This leads to an enlarged pituitary gland that has a high demand for oxygen but a relatively limited blood supply, making it vulnerable to ischemic necrosis (Sheehan syndrome) if there is severe postpartum hemorrhage.

Flashcard 93: What is the effect of increased heart rate on cardiac O2 consumption? _____

Answer: Increased O2 consumption

Flashcard 94: Which type of glial cell acts as a glycogen fuel reserve buffer? _____

Answer: Astrocytes

Extra: Atlas:

Flashcard 95: Sympathetic neurons have _____ pre-ganglionic and _____ post-ganglionic neurons

Answer: short

Flashcard 96: During the follicular phase of the menstrual cycle, estradiol _____ FSH and LH secretion

Answer: inhibits

Flashcard 97: Neurons of the _____ cortex are involved in planning of motor activities

Answer: premotor

Flashcard 98: Lesions to the somatosensory association cortex result in _____, which is the inability to recognize objects by touch

Answer: astereognosis

Flashcard 99: _____ inhibit apoptosis in osteoblasts and induce apoptosis in osteoclasts

Answer: Estrogens

Flashcard 100: The lateral area of the hypothalamus is stimulated by _____

Answer: ghrelin