Cardiovascular — Flashcards

Flashcard 131: Decreased cAMP as a result of class II antiarrhythmics (β-blockers) leads to the closure of membrane _____ channels

Answer: Ca2+

Extra: Sketchy Pharmacology: Cardiovascular (Antiarrhythmics)

Flashcard 132: The _____ bundle branch of the bundle of His divides into anterior and posterior fascicles

Answer: left

Flashcard 133: Slow twitch muscle fibers perform more _____ due to increased mitochondria

Answer: oxidative phosphorylation

Flashcard 134: Mucosal defenses include secretion of _____, HCO3-, prostaglandins, and normal blood supply

Answer: mucus

Extra: Robbins:

Flashcard 135: Myopia is corrected with _____ lenses

Answer: biconcave (diverging)

Extra: Atlas:

Flashcard 136: The changes of the myocardium in myocardial hibernation lead to decreased _____

Answer: contractility

Flashcard 137: What is the end product of oxidative burst that destroys phagocytosed microbes?\n_____

Answer: HOCl (hypochlorous acid)

Flashcard 138: A positive chronotropic effect _____ heart rate

Answer: increases

Flashcard 139: Cerebellar circuitry begins with Purkinje cells that receive excitatory input from _____ fibers and parallel fibers (of granule cells)

Answer: climbing

Extra: Purkinje cells provide the sole output from the cerebellar cortex (inhibitory via GABA to deep cerebellar nuclei). They receive excitatory input from: 1. Climbing fibers (direct from inferior olivary nucleus) 2. Parallel fibers (axons of granule cells, which receive input from mossy fibers)

Flashcard 140: Binding between GPIIb/IIIa and fibrinogen results in formation of a(n) _____

Answer: weak platelet plug