An immediate allergic response is caused by
A. memory T cells at the site of allergen contact.
B. cytotoxic T cells attacking cells at the site of allergen contact.
C. IgE antibodies attached to mast cells and basophils that then release histamine.
D. None apply.
Answer: C
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Which of the following does NOT contribute to increased stroke volume during exercise?
A. Increased venous return B. Increased sympathetic stimulation of ventricular muscle C. Increased end-diastolic volume D. Increased contractility of cardiac muscle E. Increased length of filling time during diastole
Gradual drifting of membrane potential toward threshold in autorhythmic cells is termed a
A) receptor potential. B) pacemaker potential. C) gated potential. D) ligand-gated potential. E) action potential.
The tarsus contains ________ bones
A) 4 B) 5 C) 6 D) 7 E) 8
The cochlea is part of the
A. middle ear. B. outer ear. C. inner ear.