Question

multiple choice. choose the one alternative that best completes the statement or answers the question.

1. a person receives blunt - force trauma to the back of the head. they report a major loss in vision. which lobe of the brain has most likely been damaged?

a) the temporal lobe
b) the occipital lobe
c) the parietal lobe
d) the frontal lobe

1. the______functions in hearing and smell.

a) parietal lobe
b) prefrontal lobe
c) frontal lobe
d) temporal lobe

1. cerebrospinal fluid is produced by____and it____.

a) capillaries in the dura mater; moistens the surface of the brain
b) dura mater; maintains a stable ionic concentration in the cns
c) choroid plexuses in the ventricles; protects the brain from blows to the skull
d) astrocytes; provides a pathway to the blood for waste

1. excess csf is removed from the subarachnoid space by______

a) the choroid plexus.
b) astrocytes.
c) microglia.
d) arachnoid villi.

1. the spinal cord______

a) has a core of white matter surrounded by gray matter.
b) consists solely of white matter.
c) has a core of gray matter surrounded by white matter.
d) consists solely of gray matter.

1. the central sulcus separates which lobes?

a) parietal from occipital
b) temporal from parietal
c) frontal from temporal
d) frontal from parietal

1. the______is the thin, innermost meninx attached to the surface of the brain, containing many nerves and blood vessels.

a) dura mater
b) subdural mater
c) pia mater
d) arachnoid mater

1. the primary motor area of the brain is in the______

a) postcentral gyrus of the parietal lobe.
b) posterior sulcus of the temporal lobe.
c) lateral part of the occipital lobe.
d) precentral gyrus of the frontal lobe.

1. ridges of tissue on the surface of the cerebral hemispheres are called______.

a) sulci
b) gyri
c) ganglia
d) fissures

1. the lateral ventricles communicate with the third ventricle through the______.

a) corpus callosum
b) cerebral aqueduct
c) interventricular foramina
d) hydrocephalus

1. extra credit:

the left and right sides of the cerebrum are interconnected by which one of the following?
a) corpus callosum
b) arachnoid villi
c) cerebral aqueduct
d) insula

Explanation:

1. The occipital lobe is primarily responsible for vision. Blunt - force trauma to the back of the head (where the occipital lobe is located) causing vision loss indicates occipital lobe damage.
2. The temporal lobe functions in hearing and smell.
3. Cerebrospinal fluid (CSF) is produced by choroid plexuses in the ventricles and protects the brain from blows to the skull.
4. Excess CSF is removed from the subarachnoid space by arachnoid villi.
5. The spinal cord has a core of gray matter surrounded by white matter.
6. The central sulcus separates the frontal from the parietal lobe.
7. The pia mater is the thin, innermost meninx attached to the surface of the brain, containing many nerves and blood vessels.
8. The primary motor area of the brain is in the precentral gyrus of the frontal lobe.
9. Ridges of tissue on the surface of the cerebral hemispheres are called gyri.
10. The lateral ventricles communicate with the third ventricle through the interventricular foramina.
11. The left and right sides of the cerebrum are interconnected by the corpus callosum.

Answer:

1. B. The occipital lobe
2. D. temporal lobe
3. C. choroid plexuses in the ventricles; protects the brain from blows to the skull
4. D. arachnoid villi
5. C. has a core of gray matter surrounded by white matter
6. D. frontal from parietal
7. C. pia mater
8. D. precentral gyrus of the frontal lobe
9. B. gyri
10. C. interventricular foramina
11. A. corpus callosum