Muscle Mid-Unit Practice Quiz
1. This type of muscle tissue consists of shorter
tapered cells that lack any noticeable cross-stripes.
2. This is the name of the cord-like muscle
attachment, that fastens onto the more stationary
bone.
3. These cord-like structures are made of fibrous
connective tissue, and they attach muscle on to
bone.
4. This structure is the basic contractile unit of a
muscle fiber, each of these units is flanked by Zlines.
5. This is the name of the long ropey filamentous
protein that wraps around Actin.
6. This is the name of the globular protein that
calcium binds with to help pull the long ropey
filamentous protein over to expose a binding site
for the myosin heads.
7. This muscle fiber organelle stores and releases
Calcium ions to allow for contraction.
8. Deep invaginations of a muscle fiber's cell
membrane that penetrate into the cell to carry the
nerve impulse into the interior of the cell.
9. The full proper name for the muscle that is
considered to be the “Prime Mover” in
EXTENSION of the arm at the elbow?
10. A good example of this type of joint movement,
is pulling your leg back in medially toward your
midline after it slipped out laterally while walking
on ice.
11. The rapid frequent neural stimulation of a
muscle fiber results in this specific fluid type of
muscle contraction, rather than "twitch"
12. During isotonic contraction this type of
isotonic contraction results in the Sarcomere
shortening as Z-lines move closer together.
13. This is the more scientific term for the
increased growth of a muscle due to increased
strength training/stimulation and adequate
nutrition.
14. This type of muscle tissue has branched cells
with slight striations and intercalated discs.
15. This element/ion is released from a special type
of endoplasmic reticulum when a muscle fiber
reaches threshold.
16. A single nervous stimulation of a muscle fiber
results in this jerky type of muscle fiber
contraction.
17. The scientific term for the single motor neuron
and all the muscle fibers it innervates.
18. The scientific name for the connective fascia
that wraps up the outside of a muscle
fascicle/bundle.
19. The scientific name for the muscle fiber's cell
membrane.
LABEL THE FOLLOWING:
#1-Region
#2- Region
#5
#6
#4
#3- Region
ANSWERS:
1. SMOOTH
2. ORIGIN
3. TENDON
4. SARCOMERE
5. TROPOMYOSIN
6. TROPONIN
7. SARCOPLASMIC RETICULUM
8. TRANSVERSE TUBULES
9. TRICEPS BRACHII
10. ADDUCTION
11. TETANIC contraction
12. CONCENTRIC
13. HYPERTROPHY
14. CARDIAC
15. CALCIUM
16. TWITCH
17. MOTOR UNIT
18. PERIMYSIUM
19. SARCOLEMMA
1. I – BAND
2. H- ZONE
3. A- BAND
4. M-LINE
5. ACTIN
6. Z- LINE