The cell membrane contains all of the following except ________.
A. secretory vesicle
B. cholesterol
C. phospholipid
D. channels
Answer: A
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In mammalian lungs gas exchange occurs
a. in the bronchioles. b. Across the surface of the type II cells. c. in the alveoli. d. the pores of Kohn. e. two of these.
Answer the following statements true (T) or false (F)
1. The arms and legs are part of the appendicular body portion. 2. Feedback loops continue to improve throughout life, reaching their peak in late adulthood. 3. The word “organism” can be used to describe a living thing. 4. A body in a supine position has its dorsal side to the ground. 5. A body in a prone position has its dorsal side to the ground.
All of the following describe an anatomical term of direction except which one?
A. Right B. Bilateral C. Medial D. Cubital
Serotonin
A. is a catecholamine neurotransmitter. B. acts as a neuromodulator. C. has an inhibitory effect on pathways that are involved in the control of muscles. D. has an excitatory effect on pathways that mediate sensations. E. is a neuropeptide.