BIOL 2404 A&P Basics

Lecture Quiz Seven: Muscular System

Dr. Weis

Submit numbered questions and answers (only) in a MSWord document email attachment to the instructor.

Make sure your name and test title is on all pages submitted

1. Define sarcomere. (1 point)
2. Name a contracticle myofibril and describe its structure. (1.5 points)
3. Define motor unit. (1.0 points)
4. Name the primary neurotransmitter involved with the neuromuscular junction with skeletal muscle. (0.5 points)
5. Explain the difference between isometric and isotonic contractions. (1 point)
6. Define refractory period and give two types. (1.5 points)
7. Name a function for skeletal muscle [other than to provide movement] (0.5 points)
8. Define muscle tone (0.5 points)
9. Define muscle twitch (0.5 points)
10. Complete the following chart for a muscle in the appendicular region. (2 points total)

    Muscle Name
    Action
    Origin
    Insertion
    Nerve Supply

Extra Credit : (1 point each, 2 points total)

a) Define fatigue and explain what is happening.

b) What is the difference between spastic and flaccid paralysis?