Answer the following statements true (T) or false (F)
1.Neurotransmitters released from a presynaptic cell must travel across a tiny space called a synaptic cleft.
2.The parasympathetic nervous system is responsible for "rest and repose" types of neural activities.
3.Nicotine mimics acetlycholine which causes a release of dopamine.
4.The midbrain responds to all involuntary movements.
5.The same mechanoreceptors control the inner ear for balance and for hearing.
1.TRUE
2.TRUE
3.TRUE
4.FALSE
5.FALSE
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Which of the following would you find in the stomach?
A. carboxypeptidase B. trypsin C. chymotrypsin D. pepsin E. both trypsin and chymotrypsin
Individuals with the progeria syndrome
a. number about one in eight million. b. will have an accelerated rate of aging. c. usually die in their teens. d. carry a mutant gene for a nuclear structural protein. e. are all of these.
Which of the following is properly matched?
a. osteoblasts; bone breakdown b. osteocytes; initial bone formation c. osteoclasts; initial bone formation d. osteoclasts; bone breakdown e. osteoblasts; imprisoned in bony matrix
Which of these would NOT contribute to a global increase in temperature?