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Exam 27: Nervous, Sensory, and Locomotor Systems

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Question 31

Multiple Choice

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The minimum change in a membrane's voltage that must occur to trigger an action potential is called the ________.

A) threshold
B) synaptic terminal
C) membrane potential
D) resting potential

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Question 32

Multiple Choice

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What part of the nervous system cushions the CNS and helps supply it with nutrients and hormones,and carries away wastes?

A) cerebrospinal fluid
B) spinal cord
C) interneurons
D) the bones of the skull

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Question 33

Multiple Choice

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Which of the following is an example of sensory adaptation of receptors?

A person who cannot focus well on distant objects has ________.

In all types of chemoreceptors,receptor cells develop receptor potentials in response to ________.

You start to trip,but you keep your balance and don't fall.Which of the following brain regions is responsible for the rapid coordination of muscle activity that kept you from falling?

If you lay your forearm along the table,you can rotate it so that your hand changes from a palm-down to a palm-up position.This is possible because your radius and ulna join at a ________ joint.

Scenario Questions Please read the following paragraph and then answer the following questions. The human eye is an incredible organ, capable of gathering light to focus on images near and far, in bright light or dim, and with quick adjustments between these extremes. However, eyes can develop problems, such as floaters, which are small particles that interfere with the transmission of light between the lens and the retina, and bloodshot eyes, which occur when irritants such as dust or smoke get in the eye. -Eyes can become bloodshot when irritants in the eye trigger an increased blood flow to the connective tissue covering the eye.These swollen blood vessels are located on the ________.

Which of the following is(are) part of the central nervous system?

The figure shows the human eye.Which part of the eye gives the eye its color?

Which of these carry incoming messages toward the cell body of a neuron?

Outnumbering neurons by up to 50 to 1,which cells protect,insulate,and reinforce neurons?

The two major divisions of the nervous system are the ________.

Arthritis is a common result of aging,affecting persons' ability to ________.

Alzheimer's disease is characterized by ________.

A neuron can relay a more intense signal by ________.

The movement of an action potential along a neuron is most like ________.

Which of the following statements is TRUE?

Which one of the following statements is TRUE?

A thick filament is made up of ________.