Chapter 15: Nervous System

Chapter 15: Nervous System

 

Complete Chapter Questions With Answers

 

Sample Questions Are Posted Below

 

MULTIPLE CHOICE

 

Directions: Each group of questions below consists of a numbered list of descriptive words or phrases accompanied by a diagram with certain parts indicated by letters or by a list of lettered headings. For each numbered word or phrase, select the lettered part or heading that matches it correctly and then insert the letter in the space to the right of the appropriate number. Sometimes more than one numbered word or phrase may be correctly matched to the same lettered part or heading.

 

________ Lentiform nucleus

a.	A
b.	B
c.	C
d.	D
e.	E

 

 

ANS:   C

As the cerebral cortex differentiates, nerve fibers passing to and from it pass through the swelling—corpus striatum—in the floor of each hemisphere. Soon these fibers divide the corpus striatum into two groups of nerve cells, the caudate and lentiform nuclei.

 

________ Invagination of pia mater

a.	A
b.	B
c.	C
d.	D
e.	E

 

 

ANS:   A

The choroid plexus of the lateral ventricle is formed by an invagination of vascular pia mater—tela choroidea—on the medial side of each cerebral hemisphere. The vascular connective tissue acquires a covering layer of epithelium from the ependymal lining of the ventricle.

 

________ Third ventricle

a.	A
b.	B
c.	C
d.	D
e.	E

 

 

ANS:   D

The third ventricle is formed mainly from the cavity of the diencephalon. The anterior part of the third ventricle is derived from the cavity of the telencephalon.

 

________ Produces cerebrospinal fluid (CSF)

a.	A
b.	B
c.	C
d.	D
e.	E

 

 

ANS:   A

The choroid plexuses of the lateral, third, and fourth ventricles produce most of the CSF. The plexuses in the lateral ventricles are the largest and most important producers of CSF. Some CSF is formed by the pia mater on the external surface of the brain.

 

________ Hypothalamus

a.	A
b.	B
c.	C
d.	D
e.	E

 

 

ANS:   E

The hypothalamus arises by proliferation of neuroblasts in the ventral wall of the diencephalon. The various nuclei that develop in it are concerned with endocrine activities and homeostasis.