1. Human Anatomy Review
Muscle unit

2. What is a smooth sustained contraction called?
Fused tetanus

3. What connective tissue sheaths the an individual skeletal muscle?
Endomysium

4. What muscles are involved in the dorsiflexion and inversion of the ankle joint?
Tibialis anterior

5. Explain the types of movements and the joint that is most commonly affiliated with circumduction
Ball- and – socket joint
Combination of flexion, extension, abduction, and adduction

6. Where the dorsal side of the body?
The back

7. How do crossbridges relate to myosin myofilaments?
They what the myosin myofilaments are called when they link the thick and thin filaments together.

8. What is a sarcomere
The area that is contracted in the muscle

9. According to the sliding filament theory, which two filaments slide past each other? What type of molecule are they made of?
Actin and Myosin
Protiens

10. What is the role of calcium Ions in muscle contraction?
The expose myosin bonding sites on the actin.

11. What muscles are responsible for the eyebrows to go up?
frontalis

12. How do twitches differ from tetanic contraction
How do twitches differ from tetanic contraction? Are they voluntary or involuntary?
A twitch is one quick movement, while tetanic is a prolonged contraction.
Involuntary

13. What is muscle tone?
A state of sustained partial muscle contraction that is necessary for muscle health. These are involuntary and fire at different times.

14. What are 3 characteristics of skeleton muscles
Cylindrical
Multi nucleate
Striations
Long and thin

15. What is Acetylcholine?
A neurotransmitter that stmulates muscle contraction in a skeleton muscle.

16. What are the functions of the skeleton muscle?
Stabilization of joints
Maintenance of posture
Production of movement

17. Describe a motor unit
A neuron and all of the skeletal muscle fibers