Term
| Name the 4 functional features of muscles |
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Definition
- Contractility
- Excitability
- Extensibility
- Elasticity
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Term
| Skeletal muscle makes up __% of body weight and cells are striated/nonstriated |
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Definition
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Term
Cardiac muscle tissue occurs in the walls of the _____
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Definition
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Term
| Smooth muscle tissue is striated/nonstriated and found where? |
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Definition
nonstriated
walls of hollow organs |
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Term
Name the following connective tissues:
[image] |
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Definition
- Epimysium
- Perimysium
- Endomysium
- Muscle fiber in middle of a fascicle
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Term
I think you can figure out what to do i mean right?
[image] |
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Definition
- Bone
- Epimysium
- Tendon
- Perimysium
- Fascicle
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Term
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Definition
6. Blood Vessel
7. Fascicle (wrapped by perimysium)
8. Endomysium (between individual muscle fibers)
9. Muscle fiber
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Term
| Muscle is surrounded by ______. |
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Definition
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Term
| Fascicle is surrounded by ______. |
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Definition
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Term
| Muscle fibers are surrounded by ______. |
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Definition
| Endomysium surrounds sarcolemma which surround the muscle fibers. |
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Term
| Myofibrils are individually surrounded by ________. |
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Definition
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Term
Rank these in order from smallest to largest:
Muscle fiber, myofibril, fascicle, muscle |
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Definition
| Muscle, fascicle, muscle fiber, and myofibril |
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Term
| Most skeletal muscles run from where to where? |
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Definition
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Term
| What connects muscle to bone? |
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Definition
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Term
| What is the less movable attachment (fixed) and the more movable attachment? |
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Definition
Origin- less movable (fixed)
Insertion- more movable
We have a whole semester of this AOI crap coming up. Get excited!! |
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Term
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Definition
- Origin by direct attachment
- Brachialis
- Tendon
- Insertion by indirect attachment
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Term
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Definition
- Sarcolemma
- Mitochondrion
- Myofibril
- Nucleus
- Light I band
- Dark A band
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Term
| Striations are the result of the internal structure of _________? |
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Definition
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Term
Myofibrils
-Are a long row of repeating segments called ________. |
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Definition
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Term
| What is the basic unit of contraction of a skeletal muscle? |
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Definition
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Term
Thin filaments are composed of what?
Thick filaments are composed of what? |
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Definition
Thin- actin
Thick- myosin |
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Term
"A" bands, do not change length and contain what?
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Definition
| The full length of the thick filament |
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Term
| The "H" zone is a center part of "A" band where only thin/thick filaments occur? |
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Definition
thick
(an "H" is a wider letter than an "I" and has the thick filament)
Genius! |
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Term
| What line is inside the H zone? |
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Definition
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Term
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Definition
- Thin (actin) filament
- Thick (myosin) filament
- H zone
- Z disc
- A band
- I band
- M line
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Term
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Definition
- Z disc
- I band
- M line
- Thin (actin) filaments
- Elastic (tintin) filaments
- Thick (myosin) filament
- Myosin heads
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Term
Part of a skeletal muscle fiber (cell)
Name 1-5
[image] |
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Definition
- Z disc
- M line
- H zone
- A band
- I band
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Term
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Definition
6. Sarcolemma
7. Triad
8. T tubule
9. Terminal cistern of the sarcoplasmic reticulum (2)
10. Tubules of the sarcoplasmic reticulum
11. Myofibrils
12. Mitochondria |
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Term
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Definition
- Thin (actin) filaments
- Myosin heads
- Thick (myosin) filaments
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Term
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Definition
- Myosin molecule
- Myosin head
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Term
During contraction:
what happens to the Z discs?
what happens to the H zone?
what happens to the I, Z & A length? |
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Definition
| Z discs move closer together, the H zone & the I band shorten, the Z & A length do NOT change (constant) |
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Term
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Definition
- Motor neuron cell body
- Motor neuron axon
- spinal cord
- motor unit 1
- motor unit 2
- Axon terminals (at neuromuscular junction)
- Branching axon (to motor unit)
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