Which nervous system promotes increased peripheral resistance and increased blood pressure through the vasoconstriction of systemic arterioles?
A) sensory nervous system
B) parasympathetic nervous system
C) sympathetic nervous system
D) somatic nervous system
Answer: C
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How does blocking retrograde axoplasmic transport in an axon affect the activity of a neuron?
A) The neuron becomes unable to produce neurotransmitters. B) The neuron becomes unable to produce action potentials. C) The soma becomes unable to export products to the synaptic terminals. D) The soma becomes unable to respond to changes in the distal end of the axon. E) The neuron becomes unable to depolarize when stimulated.
Which of the following statements about negative feedback is incorrect?
a. It exists when a change in a regulated variable triggers a response that opposes the change. b. It exists when the input to a system increases the output and the output inhibits the input. c. The control system's input and output continue to enhance each other. d. It is the method by which most of the body's control mechanisms operate. e. It helps maintain the body's dynamic, steady state.
Where are the visual pigments located in the rods and cones?
-inside membrane discs stacked in the outer segment -inside a photosensitive nucleus -in mitochondria located in the outer segment -in the inner segment of photoreceptors -sandwiched in the cell membrane of the photoreceptors
Of the following structures, which would be located in the mediastinum?
A. occipital Lobe B. Aorta C. Left carotid Artery D. Pancreas