 |
1 | |
Neurons receive nutritional support from |
| | A) | the nodes of Ranvier. |
| | B) | neuroglial cells. |
| | C) | the array of dendrites which surround them. |
| | D) | axons. |
| | E) | oligodendrocytes. |
|
|
2 | |
The myelin sheath is produced by |
| | A) | Schwann cells. |
| | B) | synaptic stimulation. |
| | C) | neuroglial cells. |
| | D) | myelin cells. |
| | E) | none of the above |
|
|
3 | |
Protein channels in the plasma membrane of neurons through which ions cross help to regulate nerve impulses. |
| | A) | true |
| | B) | false |
|
|
4 | |
Sodium ions are being moved out of a neuron and potassium ions into a neuron when it is at rest. |
| | A) | true |
| | B) | false |
|
|
5 | |
Axons _________ when a nerve impulse reaches its end. |
| | A) | die |
| | B) | produce and release serotonin |
| | C) | become excited |
| | D) | attach themselves to the dendrites of a neighboring neuron |
| | E) | release a neurotransmitter |
|
|
6 | |
Midbrain: |
| | A) | associative activity - "end brain" |
| | B) | integration and relay of sensory information |
| | C) | made up mostly of the optic lobes |
| | D) | controls secretions of the pituitary gland |
|
|
7 | |
Thalamus: |
| | A) | associative activity - "end brain" |
| | B) | integration and relay of sensory information |
| | C) | made up mostly of the optic lobes |
| | D) | controls secretions of the pituitary gland |
|
|
8 | |
Hypothalamus: |
| | A) | associative activity - "end brain" |
| | B) | integration and relay of sensory information |
| | C) | made up mostly of the optic lobes |
| | D) | controls secretions of the pituitary gland |
|
|
9 | |
Cerebrum: |
| | A) | associative activity - "end brain" |
| | B) | integration and relay of sensory information |
| | C) | made up mostly of the optic lobes |
| | D) | controls secretions of the pituitary gland |
|
|
10 | |
Information is transmitted from the cortex to the rest of the brain by |
| | A) | the secretion of serotonin into nerve synapses. |
| | B) | creating action potential by pumping sodium ions out of neurons. |
| | C) | a solid white region of myelinated nerve fibers. |
| | D) | the hypothalamus. |
| | E) | the temporal lobe. |
|
|
11 | |
Which part of the brain enables birds to land safely on a branch moving in the wind? |
| | A) | the thalamus |
| | B) | the brain stem |
| | C) | the limbic system |
| | D) | the cerebellum |
| | E) | the pons |
|
|
12 | |
After eating a meal of fried chicken the voluntary nervous system would play a role in stimulating the gallbladder to release bile. |
| | A) | true |
| | B) | false |
|
|
13 | |
Reflexes cause the body to respond often before the cerebrum is aware danger exists. |
| | A) | true |
| | B) | false |
|
|
14 | |
The __________ is responsible for bodily responses designed to conserve energy—such as slowing down the rate of the heart. |
| | A) | voluntary |
| | B) | autonomic |
| | C) | parasympathetic |
| | D) | sympathetic |
| | E) | both a and c |
|
|
15 | |
While blood pressure is sensed by neurons called baroreceptors, changes in temperature are detected by two types of nerve ending. |
| | A) | true |
| | B) | false |
|
|
16 | |
Semicircular canals allow an organism to sense |
| | A) | smells. |
| | B) | balance. |
| | C) | changes in blood pressure. |
| | D) | temperature. |
| | E) | motion. |
|
|
17 | |
Movement of fluid inside the inner ear allows an organism to sense motion when |
| | A) | the fluid changes temperature relative to the external environment. |
| | B) | cilia on hair cells are displaced. |
| | C) | the pressure inside the ear changes. |
| | D) | both a and c are true |
| | E) | none of the above is true |
|
|
18 | |
A pit organ is a cluster of photoreceptors which allow spit vipers to detect the location of their prey. |
| | A) | true |
| | B) | false |
|
|
19 | |
The autonomic nervous system |
| | A) | controls the skeletal muscles. |
| | B) | is active only when the body is in crisis. |
| | C) | stimulates glands and controls the smooth muscles. |
| | D) | controls all of the body's functions. |
| | E) | none of the above |
|
|
20 | |
A stroke is caused by |
| | A) | blockage of the heart by clots. |
| | B) | buildup of cholesterol in blood vessels. |
| | C) | blockage of blood vessels in the brain by clots. |
| | D) | insufficient thyroid hormone. |
| | E) | lack of oxygen. |
|
|
21 | |
The reticular formation |
| | A) | is only present in the brains of epileptics. |
| | B) | is a network of nerves that runs through the brain connecting its parts. |
| | C) | is sometimes called the medulla oblongata. |
| | D) | is responsible for the control of smooth muscles. |
| | E) | allows birds to maintain their balance as they fly. |
|
|
22 | |
The outer edges of the spinal cord are white because |
| | A) | no red blood cells are present in the area. |
| | B) | it is covered in a thick layer of connective tissue. |
| | C) | of the presence of axons and dendrites. |
| | D) | a layer of fat surrounds the structure. |
| | E) | both a and c |
|
|
23 | |
Interneurons are |
| | A) | connecting neurons that are between the sensory and motor neurons. |
| | B) | the spaces between dendrites and other neurons. |
| | C) | stimulated by the pituitary gland. |
| | D) | found on the epidermis. |
| | E) | none of the above |
|
|
24 | |
Interoreceptors |
| | A) | regulate activity between adjacent neurons. |
| | B) | detect information about the body's internal condition. |
| | C) | work with neurotransmitters to regulate the speed of nerve impulses. |
| | D) | open and close ion channels on sensory neurons. |
| | E) | work only in the central nervous system. |
|
|
25 | |
A person with defective otolith sensory receptors |
| | A) | has a difficult time maintaining balance. |
| | B) | is deaf. |
| | C) | cannot detect external temperature changes. |
| | D) | has a faulty sense of smell. |
| | E) | has a limited imagination. |
|
|
26 | |
Parallax is |
| | A) | the synchronized functioning of neurons. |
| | B) | a slight displacement of images that plays a role in distance perception. |
| | C) | the path that light takes through the eye. |
| | D) | only important in land animals. |
| | E) | a defect caused by eyes that are oblong in shape. |
|
|
27 | |
Spinal cord |
| | A) | Balance, posture, and muscular coordination are controlled here. |
| | B) | Body temperature and blood pressure are controlled here. |
| | C) | It is sometimes called the brain stem. |
| | D) | This structure consists of sensory and motor nerve tracts. |
| | E) | The "center for higher thought." |
|
|
28 | |
Cerebrum |
| | A) | Balance, posture, and muscular coordination are controlled here. |
| | B) | Body temperature and blood pressure are controlled here. |
| | C) | It is sometimes called the brain stem. |
| | D) | This structure consists of sensory and motor nerve tracts. |
| | E) | The "center for higher thought." |
|
|
29 | |
Hypothalamus |
| | A) | Balance, posture, and muscular coordination are controlled here. |
| | B) | Body temperature and blood pressure are controlled here. |
| | C) | It is sometimes called the brain stem. |
| | D) | This structure consists of sensory and motor nerve tracts. |
| | E) | The "center for higher thought." |
|
|
30 | |
Cerebellum |
| | A) | Balance, posture, and muscular coordination are controlled here. |
| | B) | Body temperature and blood pressure are controlled here. |
| | C) | It is sometimes called the brain stem. |
| | D) | This structure consists of sensory and motor nerve tracts. |
| | E) | The "center for higher thought." |
|
|
31 | |
Medulla oblongata |
| | A) | Balance, posture, and muscular coordination are controlled here. |
| | B) | Body temperature and blood pressure are controlled here. |
| | C) | It is sometimes called the brain stem. |
| | D) | This structure consists of sensory and motor nerve tracts. |
| | E) | The "center for higher thought." |
|
|
32 | |
Neuroglial cells |
| | A) | Nerve impulses along the axon are facilitated by them. |
| | B) | These extend from one end of a cell body. |
| | C) | They make up more than half the volume of the human nervous system. |
| | D) | A layer of insulation surrounding the axon. |
| | E) | Gaps along the length of an axon. |
|
|
33 | |
Myelin sheath: |
| | A) | Nerve impulses along the axon are facilitated by them. |
| | B) | These extend from one end of a cell body. |
| | C) | They make up more than half the volume of the human nervous system. |
| | D) | A layer of insulation surrounding the axon. |
| | E) | Gaps along the length of an axon. |
|
|
34 | |
Nodes of Ranvier: |
| | A) | Nerve impulses along the axon are facilitated by them. |
| | B) | These extend from one end of a cell body. |
| | C) | They make up more than half the volume of the human nervous system. |
| | D) | A layer of insulation surrounding the axon. |
| | E) | Gaps along the length of an axon. |
|
|
35 | |
Dendrites: |
| | A) | Nerve impulses along the axon are facilitated by them. |
| | B) | These extend from one end of a cell body. |
| | C) | They make up more than half the volume of the human nervous system. |
| | D) | A layer of insulation surrounding the axon. |
| | E) | Gaps along the length of an axon. |
|
|
36 | |
Schwann cells: |
| | A) | Nerve impulses along the axon are facilitated by them. |
| | B) | These extend from one end of a cell body. |
| | C) | They make up more than half the volume of the human nervous system. |
| | D) | A layer of insulation surrounding the axon. |
| | E) | Gaps along the length of an axon. |
|