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Flashcards in Internal Framework of the Body Deck (31):
1

Connective tissues perform which three functions?

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

2

• Are connective tissue layers and wrappings
that support or surround organs

• Fasciae (plural) or fascia (singular)

3

Three Types of Fasciae

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

4

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

Superficial Fascia

5

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

Deep Fascia

6

• Between serous
membranes and
deep fascia
• Areolar tissue

Subserous Fascia

7

• Specialized for contraction
• Produces (initiates) all body movement

Muscle tissue

8

• Three types of muscle tissue

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)

9

• Large body muscles responsible for movement

1. Skeletal muscle tissue

10

• Found only in the heart

2. Cardiac muscle tissue

11

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

3. Smooth muscle tissue

12

Classification of Muscle Cells--describe muscle cells

• 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)

13

muscle cells with a banded appearance

triated

14

not banded; smooth

Nonstriated

15

Muscle cells can be controlled involuntarily or ________

automatically

16

Muscle cells can be controlled voluntarily
or ___________

consciously

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

Skeletal Muscle Cells

18

New fibers are produced by stem cells (or ________
cells)

myosatellite cells

19

Cells are long, cylindrical,
striated, and multinucleate.

Skeletal Muscle Cells

20

Locations of Skeletal Muscle Cells

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

21

Functions of Skeletal Muscle Cells

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

22

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

Cardiac Muscle Cells

23

• Called cardiocytes

Cardiac Muscle Cells

24

Cardiac Muscle Cells form branching networks connected at _______ _____

intercalated
discs

25

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

• Smooth Muscle Cells

26

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

Cardiac Muscle Tissue

27

Location of Cardiac Muscle Tissue

LOCATION: Heart

28

Function of Cardiac Muscle Tissue

FUNCTIONS: Circulates
blood; maintains
blood pressure

29

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

Smooth Muscle Tissue

30

Locations of Smooth Muscle Tissue

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

31

Functions of Smooth Muscle Tissue

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