Which of the following allows movement of muscles and joints and maintains normal skin tension?
A. Dermal papillae
B. Elastic fibers
C. Collagen fibers
D. Sensory fibers
Answer: B
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Where does the atlas articulate with the skull?
A. The foramen magnum B. The temporomandibular joint C. The styloid process D. The occipital condyles E. The pterygoid process
What is the importance of reciprocal innervation in muscular reflexes?
A. It prevents simultaneous activity of antagonistic muscle groups that would impede limb movement. B. It ensures that limbs on the contralateral side of the body perform the same movements as those on the ipsilateral side. C. It maintains signaling along afferent neurons from stretch receptors, even when a muscle shortens rapidly. D. It prevents excessive force on a muscle from resulting in tearing of fibers, or damage to the tendon. E. It recruits synergistic muscles to come to the aid of a muscle that help it generate force and limb motion.
Which region of the nephron is adapted for reabsorption, as seen in its length and prominent microvilli?
a) proximal convoluted tubule b) distal convoluted tubule c) nephron loop d) collecting duct
When transmission occurs at a synapse, neurotransmitter is released by
A. the presynaptic neuron's synaptic knob into the synaptic cleft. B. the postsynaptic neuron's telodendria into the axon hillock. C. the postsynaptic neuron's dendrites into the synaptic cleft. D. the presynaptic neuron's soma into synaptic vesicles. E. the presynaptic neuron's dendrites into the synaptic cleft.