Within the ear, tiny hairlike receptors are stimulated by sound and conduct the signal to the brain via the vestibulocochlear nerve.
Answer the following statement true (T) or false (F)
True
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Which of the following neurotransmitter is a catecholamine?
a. acetylcholine b. enkephalin c. endorphin d. dopamine
The carpometacarpal joint consists of the
a) base of metacarpal bones and distal row of carpal bones. b) base of metacarpal bones and proximal row of carpal bones. c) head of metacarpal bones and distal row of carpal bones. d) head of metacarpal bones and proximal row of carpal bones. e) None of these choices are correct.
Which labeled cell in the diagram is a pluripotent stem cell?
a) A b) B c) C d) D e) G
Which structures pull on the tendinous cords (chordae tendinae) and hold them taut during ventricular contraction?
A. Pectinate muscles B. Trabeculae carneae C. Fibers in the bundle of His D. Coronary ropes E. Papillary muscles