Chapter 9 Flashcards
1
Q
3 types of muscle tissue
A
- Skeletal
- Cardiac
- Smooth
2
Q
Characteristics of Muscle Tissue
A
- Excitability
- Contractality
- Extensibility
- Elasticity
3
Q
Excitability is also known as what? Function.
A
- responsiveness
- ability to receive and respond to stimuli
4
Q
Contractility’s function is:
A
ability to shorten forcibly when stimulated
5
Q
Extensibility’s function is:
A
ability to be stretched
6
Q
Elasticity’s function is:
A
ability to recoil to resting length
7
Q
Skeletal Muscles
A
- attached to bone and skin
- single, long, cylindrical, multinucleate cells, striated
- voluntary
8
Q
Cardiac Muscles
A
- walls of the heart
- branch chain of cells, uni/binucleate, striated
- involuntary
9
Q
Smooth Muscles
A
- walls of hollow organs: stomach, urinary bladder, airway
- single, uninucleate,non striated
-involuntary
10
Q
Muscle Functions
A
- Movement of bones or fluids
- Maintaining posture and body positon
- Stabilize joints
- Heat generation
*Bonus functions: protect organs, forms valves, controls pupil size, causes goosebumps
11
Q
Where do skeletal muscles attach?
A
insertion: movable bone
origin: immovable/ less movable bone
12
Q
Attachments may be ____ or ____.
A
direct
indirect
13
Q
Connective tissue sheaths of skeletal muscles:
A
- Epimysium
- Perimysium
- Endomysium
14
Q
Epimysium
A
surrounding the entire muscle
15
Q
Perimysium
A
surrounding groups of muscle fibers (fascicles)
