Expiratory movements are produced by contraction of the ________ muscle(s)
A) scalene
B) diaphragm
C) internal intercostal
D) external intercostal
E) serratus anterior
Answer: C
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The X chromosomes from a female child are inherited from both the mother and father.
Answer the following statement true (T) or false (F)
Which disorder involves the loss of sympathetic innervation to one side of the face due to inherited mutation, injury or disease?
a) Raynaud's phenomenon b) Autonomic dysreflexia c) Reflex sympathetic dystrophy d) Diabetic neuropathy e) Horner's Syndrome
Which is TRUE about the comparison of excitation-contraction coupling in cardiac muscle with that in skeletal muscle?
A. Extracellular Ca2+ plays a major role in cardiac but not skeletal muscle. B. The mechanism for Ca2+ release from the sarcoplasmic reticulum is the same in both types of muscle. C. Intracellular Ca2+ stores are necessary for contraction in skeletal muscle, but not in cardiac muscle. D. Troponin sites are completely saturated immediately after Ca2+ release in both types of muscle. E. There is no net change in total intracellular Ca2+ concentration in either muscle.
Which of the labeled layers in the diagram of the arterial wall is composed of a simple squamous epithelium, a basement membrane and a layer of elastic tissue?
a) A b) B c) C d) A and B e) A, B, and C