When an action potential reaches the presynaptic terminal of a neuron, the NEXT event is
A) uptake of neurotransmitter from the synaptic cleft.
B) active transport of calcium ions out of the cell.
C) diffusion of calcium ions into the cell.
D) immediate release of neurotransmitter.
Answer: C) diffusion of calcium ions into the cell.
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Which of the following actions does not need to occur at the temporomandibular joint when you are chewing a bite of a sandwich?
A. Lateral excursion B. Abduction C. Elevation D. Depression E. Medial excursion
Bone remodeling occurs as osteoblasts resorb bone tissue and osteoclasts replace the
bone. Indicate whether the statement is true or false
Which of the following is a characteristic of innate immunity?
a. It develops after exposure to an antigen. b. It is present from birth. c. Protection is delayed until antibodies are formed. d. It uses the process of inflammation to destroy foreign particles.
In the negative feedback loop for decreasing body temperature maintenance, which of the following structures of the skin would act as an effector?
A) Arrector pili muscles B) Eccrine sweat glands C) Sebaceous glands D) Stratum basale