In terms of vision, the first order cells are the _____, while the _____ and _____ are the second and third order cells, respectively
a. photoreceptors; bipolar cells; ganglion cells
b. photoreceptors; ganglion cells; bipolar cells
c. bipolar cells; ganglion cells; photoreceptors
d. bipolar cells; photoreceptors; ganglion cells
e. ganglion cells; bipolar cells; photoreceptors
A
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Which of the following muscles adducts and medially rotates the thigh?
A. Piriformis B. Rectus femoris C. Gracilis D. Adductor magnus E. Sartorius
The muscle that inserts on the acromion and scapular spine is the
A) serratus anterior. B) trapezius. C) sternocleidomastoid. D) pectoralis minor. E) levator scapulae.
Put the steps of impulse transmission at a synapse in the correct order. 1. Action potential promotes the entry of calcium ions into the synaptic knob. 2. Neurotransmitter diffuses across the synaptic cleft. 3. The presynaptic membrane releases neurotransmitter by exocytosis. 4. Nerve impulse travels along the axon to the synaptic terminal. 5. Neurotransmitter binds to receptors on the
postsynaptic membrane. 6. Secretory vesicles containing neurotransmitter fuse with the presynaptic membrane. A) 4, 1, 6, 2, 3, 5 B) 4, 1, 6, 3, 2, 5 C) 1, 4, 6, 3, 2, 5 D) 3, 2, 4, 1, 6, 5
The arrector pili muscle's predominate, useful function in humans is to ________
A) stimulating faster hair growth B) assisting in the release sebum from nearby sebaceous glands C) preventing germs from entering the hair shaft D) provide warmth by making the hair stand on end