In this figure showing an anterior view of the heart, what is depicted by number 7?
A. Aortic semilunar valve
B. Right atrium
C. Left ventricle
D. Right atrioventricular valve
E. Pulmonary semilunar valve
D
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Which are functions performed by the fibrous skeleton of the heart?
a: Separates the atria and ventricles b: Anchors the heart valves c: Provides electrical insulation between the atria and ventricles d: Provides the framework for the attachment of the myocardium e: None of these are true functions of the fibrous skeleton of the heart A. a, d B. b, d C. a, c, d D. a, b, c, d E. e
Answer the following statement(s) true (T) or false (F)
1. The autonomic effect on a target cell depends only on the neurotransmitter reaching that target cell. 2. Acetylcholine binds to both muscarinic and nicotinic receptors. 3. Acetylcholine always has an excitatory effect. 4. Binding of norepinephrine (NE) to an alpha-adrenergic receptor is usually excitatory, and binding to a beta-adrenergic receptor is usually inhibitory.
The cristae are the inner portions of the _____.
A) mitochondria B) ribosome C) inclusion bodies D) centrosome
Sperm travels to the ampulla of the ductus deferens before reaching the spermatic cord.
Answer the following statement true (T) or false (F)