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
E. Papillary muscles
Anatomy & Physiology
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The FDA is responsible for approval of all chemicals dispensed by veterinarians
a. true b. false
Anatomy & Physiology
The following local chemical changes occur during a period of increased cell activity except
a. increased CO2. b. increased acid. c. increased O2. d. increased K+. e. increased osmolarity.
Anatomy & Physiology
Which statement is true of both spermatogenesis and oogenesis?
A) It produces haploid gametes. B) It begins at puberty. C) It occurs completely in the gonad. D) It involves equal divisions of cytoplasm.
Anatomy & Physiology
A motor neuron carries impulses
A. to muscles and glands. B. always within the CNS. C. to the CNS.
Anatomy & Physiology