168
UNIT ONE
5.6
NERVOUS TISSUES (PAGE 164)
1. Nervous tissue is in the brain, spinal cord, and
peripheral nerves.
2. Neurons
a. Neurons sense changes and respond by
transmitting nerve impulses to other neurons or to
muscles or glands.
b. They coordinate, regulate, and integrate body
activities.
3. Neuroglia
a. Some of these cells bind and support nervous
tissue.
b. Others carry on phagocytosis.
c. Still others connect neurons to blood vessels.
d. Some are involved in cell-to-cell communication.
c. Muscle cells contract when stimulated by nerve
impulses, then immediately relax when they are no
longer stimulated.
3. Smooth muscle tissue
a. This tissue of spindle-shaped cells, each with one
nucleus, is in the walls of hollow internal organs.
b. Usually it is involuntarily controlled.
4. Cardiac muscle tissue
a. This tissue is found only in the heart.
b. Striated cells, each with a single nucleus, are
joined by intercalated discs and form branched
networks.
c. Cardiac muscle tissue is involuntarily controlled.
5.1 Introduction
1
Def
ne
tissue
. (p. 144)
2
Describe three types oF intercellular junctions. (p. 144)
3
Which oF the Following is a major tissue type in the body?
(p. 144)
±a.± epithelial
±b.± nervous
±c.± muscle
±d.± connective
e. all oF the above.
5.2 Epithelial Tissues
4
A general characteristic oF epithelial tissues is that
______________. (p. 145)
a. numerous blood vessels are present
b. cells are spaced apart
c. cells divide rapidly
d. there is much extracellular matrix between cells
5
Distinguish between simple epithelium and stratif
ed
epithelium. (p. 145)
6
Explain how the structure oF simple squamous epithelium
provides its Function. (p. 145)
7
Match the epithelial tissue on the leFt to an organ in
which the tissue is Found. (p. 146–152)
(1) simple squamous
epithelium
(2) simple cuboidal epithelium
(3) simple columnar epithelium
(4) pseudostratif
ed columnar
epithelium
(5) stratif
ed squamous
epithelium
(6) stratif
ed cuboidal
epithelium
(7) stratif
ed columnar
epithelium
(8) transitional epithelium
(9) glandular epithelium
A. lining oF intestines
B. lining oF ducts oF
mammary glands
C. lining oF urinary
bladder
D. salivary glands
E. air sacs oF lungs
². respiratory passages
G. ductus deFerens
H. lining oF kidney
tubules
I.
outer layer oF skin
CHAPTER ASSESSMENTS
8
Distinguish between an exocrine gland and an endocrine
gland. (p. 150)
9
Describe how glands are classif
ed according to the
structure oF their ducts and the organization oF their cells.
(p. 150)
10
A gland that secretes substances by exocytosis is a(n)
_______________ gland. (p. 150)
±a.± merocrine
±b.± apocrine
±c.± holocrine
5.3 Connective Tissues
11
Discuss the general characteristics oF connective tissue.
(p. 153)
12
Def
ne
extracellular matrix
and
ground substance
. (p. 153)
13
Describe three major types oF connective tissue cells.
(p. 153)
14
______________ are thick f
bers that have great tensile
strength and are ³
exible, but only slightly elastic f
bers.
(p. 155)
±a.± Reticular
±b.± Elastic
±c.± Collagenous
15
Explain the di´
erence between loose connective tissue
and dense connective tissue. (p. 156)
16
Explain how the amount oF adipose tissue in the body
re³
ects diet. (p. 156)
17
Contrast dense regular and dense irregular connective
tissues. (p. 158)
18
Explain why injured dense regular connective tissue and
cartilage are usually slow to heal. (p. 158)
19
Distinguish between reticular and elastic connective
tissues. (p. 158)
20
Name the major types oF cartilage, and describe their
di´
erences and similarities. (p. 158)
21
Describe how bone cells are organized in bone tissue.
(p. 160)
22
Explain how bone cells receive nutrients. (p. 160)
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