The plasma membrane of an axon is called the
A) axon hillock.
B) axoplasm.
C) axolemma.
D) axon terminal.
E) axokaryon.
Answer: C
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The muscle that extends the forearm when doing push-ups is the
A) deltoid. B) pectorals. C) brachialis. D) triceps. E) biceps.
Answer the following statements true (T) or false (F)
1. The organs of the respiratory system are designed to perform two basic functions: air distribution and gas exchange. 2. The upper respiratory tract consists of the nose, pharynx, and trachea. 3. The lower respiratory tract consists of the larynx, bronchi, and lungs. 4. A “head cold” involves the upper respiratory tract. 5. A “chest cold” involves the lower respiratory tract.
Under what conditions would the skin produce sweat and experience cutaneous vasodilation?
A) upon decrease in body temperature B) upon increase in body temperature C) upon exposure to UV radiation D) due to lack of oxygen
An organ is
A. a small structure within a cell. B. a structure composed of several tissue types. C. the basic structural unit of all living organisms. D. a group of molecules with a common set of functions. E. a group of cells with similar structure and function.