Chapter 7 Review Questions - Muscular System Flashcards
1
Q
The 3 types of muscle tissues
A
- Skeletal
- Cardiac
- Smooth
2
Q
What is Skeletal muscle tissue?
A
Moves the body by pulling on bones of skeleton
3
Q
What is Cardiac muscle tissue?
A
Found only in the heart. Propels blood.
4
Q
What is Smooth muscle tissue?
A
Moves fluid and solids along digestive tract. Regulates diameter of small arteries
5
Q
What are the functions of skeletal muscle? (6 functions)
A
- Produce skeletal movement
- Maintain body posture and body position
- Support soft tissue
- Guard entrances and exits
- Maintain body temperature
- Provide nutrient reserves
6
Q
What are the 3 tissue layers of skeletal muscle?
A
(1) Epimysium
(2) Perimysium
(3) Endomysium
7
Q
The structure of Thin filaments is composed of 3 proteins, what are they?
A
- Actin
- Tropomyosin
- Troponin
8
Q
What are the components of Thin filaments?
A
- Attached to the Z lines at each end
- Composed of 3 proteins (actin, tropomyosin, troponin)
9
Q
What are the components of Thick filaments?
A
- Contains myosin molecules
- Arranged with myosin tails pointing toward M line
- Myosin heads
- Elastic core of thick filament recoils after stretching
