10) antigen-presenting cells usually display processed antigens to t cells in
the_____________.
a. blood plasma
b. lymph nodes
c. thymus
d. red bone marrow
e. liver
11) shortening a muscle while itmaintains constant tension is called __________.
a. complete tetanus
b. incomplete tetanus
c. an isokinetic contraction
d. an isometric contraction
e. an isotonic contraction
12) which of the following are powerful vasoconstrictors?
a. norepinephrine and antidiuretic hormone (adh)
b. norepinephrine and atrial natriuretic peptide (anp)
c. epinephrine and angiotensin ii
d. epinephrine and aldosterone
e. epinephrine and antidiuretic hormone (adh)
13) all of the following are typical characteristics of neurotransmitters except
__________.
a. they are synthesized by a presynaptic neuron
b. they are released in response to stimulation
c. they are released into the bloodstream before reaching the postsynaptic cell
d. they bind to specific receptors on the postsynaptic cell
e. they alter the physiology of the postsynaptic cell