Internal Framework of the Body

Question 1

Connective tissues perform which three functions?

Answer 1

1. Provide strength and stability
2. Maintain positions of internal organs
3. Provide routes for blood vessels, lymphatic
   vessels, and nerves

Question 2

• Are connective tissue layers and wrappings

that support or surround organs

Answer 2

• Fasciae (plural) or fascia (singular)

Question 3

Three Types of Fasciae

Answer 3

1. Superficial fascia
2. Deep fascia
3. Subserous fascia

Question 4

• Between skin and
underlying organs
• Areolar tissue and adipose
tissue
• Also known as
subcutaneous layer
or hypodermis

Answer 4

Superficial Fascia

Question 5

• Bound to capsules, tendons,
and ligaments
• Dense connective tissue
• Forms a strong, fibrous
internal framework

Answer 5

Deep Fascia

Question 6

• Between serous
membranes and
deep fascia
• Areolar tissue

Answer 6

Subserous Fascia

Question 7

• Specialized for contraction

* Produces (initiates) all body movement

Answer 7

Muscle tissue

Question 8

• Three types of muscle tissue

Answer 8

1. Skeletal muscle tissue
   • Large body muscles responsible for movement
2. Cardiac muscle tissue
   • Found only in the heart
3. Smooth muscle tissue
   • Found in walls of hollow, contracting organs
   (blood vessels; urinary bladder; respiratory,
   digestive, and reproductive tracts)

Question 9

• Large body muscles responsible for movement

Answer 9

1. Skeletal muscle tissue

Question 10

• Found only in the heart

Answer 10

2. Cardiac muscle tissue

Question 11

3. Smooth muscle tissue
   • Found in walls of hollow, contracting organs
   (blood vessels; urinary bladder; respiratory,
   digestive, and reproductive tracts)

Answer 11

3. Smooth muscle tissue

Question 12

Classification of Muscle Cells–describe muscle cells

Answer 12

• Striated (muscle cells with a banded appearance)
• Nonstriated (not banded; smooth)
• Muscle cells can have a single nucleus (unicellular)
• Muscle cells can be multinucleate
• Muscle cells can be controlled voluntarily
(consciously)
• Muscle cells can be controlled involuntarily
(automatically)

Question 13

muscle cells with a banded appearance

Answer 13

triated

Question 14

not banded; smooth

Answer 14

Nonstriated

Question 15

Muscle cells can be controlled involuntarily or ________

Answer 15

automatically

Question 16

Muscle cells can be controlled voluntarily

or ___________

Answer 16

consciously

Question 17

• Long and thin (cylindrical)
• Usually called muscle fibers
• Do not divide
• New fibers are produced by stem cells (myosatellite
cells)
• Multinucleated, cylindrical, striated, voluntary muscles

Answer 17

Skeletal Muscle Cells

Question 18

New fibers are produced by stem cells (or ________

cells)

Answer 18

myosatellite cells

Question 19

Cells are long, cylindrical,

striated, and multinucleate.

Answer 19

Skeletal Muscle Cells

Question 20

Locations of Skeletal Muscle Cells

Answer 20

LOCATIONS: Combined
with connective tissues
and neural tissue in
skeletal muscles

Question 21

Functions of Skeletal Muscle Cells

Answer 21

FUNCTIONS: Moves or
stabilizes the position of
the skeleton; guards
entrances and exits to the
digestive, respiratory, and
urinary tracts; generates
heat; protects internal
organs

Question 22

• Called cardiocytes
• Form branching networks connected at intercalated
discs
• Short branched, striated, involuntary muscles

Answer 22

Cardiac Muscle Cells

Question 23

• Called cardiocytes

Answer 23

Cardiac Muscle Cells

Question 24

Cardiac Muscle Cells form branching networks connected at _______ _____

Answer 24

intercalated

discs

Question 25

* Small and tapered * Can divide and regenerate * Unicellular, spindle-shaped, nonstriated, involuntary

Answer 25

• Smooth Muscle Cells

Question 26

``` Cells are short, branched, and striated, usually with a single nucleus; cells are interconnected by intercalated discs. ```

Answer 26

Cardiac Muscle Tissue

Question 27

Location of Cardiac Muscle Tissue

Answer 27

LOCATION: Heart

Question 28

Function of Cardiac Muscle Tissue

Answer 28

FUNCTIONS: Circulates blood; maintains blood pressure

Question 29

``` Cells are short, spindleshaped, and nonstriated, with a single, central nucleus. LOCATION ```

Answer 29

Smooth Muscle Tissue

Question 30

Locations of Smooth Muscle Tissue

Answer 30

LOCATIONS: Found in the walls of blood vessels and in digestive, respiratory, urinary, and reproductive organs

Question 31

Functions of Smooth Muscle Tissue

Answer 31

``` FUNCTIONS: Moves food, urine, and reproductive tract secretions; controls diameter of respiratory passageways; regulates diameter of blood vessels ```