What is NOT associated with a chemical synapse?
A) presynaptic neuron B) gap junction
C) synaptic cleft D) neurotransmitter
Answer: B
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Which of the following structures are found in veins but NOT in arteries?
a) tunica externa b) tunica media c) tunica interna d) valve e) lumen
____________________ forces require the cell to expend energy in transporting a substance across the membrane
Fill in the blank(s) with correct word
Which of the following is not a function of the control center within a feedback mechanism?
A. Detects a change in the value of a variable B. Controls effectors C. Receives and processes information D. Establishes a set point
Large clusters of lymph nodes are found near the body surface in all of the following areas except the:
A. axillary region. B. popliteal region. C. inguinal region. D. cervical region.