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Exam 1/2 Anatomy and Physiology: Muscle System
This flashcard deck covers key concepts related to the muscle system, including muscle types, locations, and functions, as well as specific muscle anatomy.
What is the point of contact between the nerve ending and muscle fiber?
Neuromuscular junction
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Key Terms
Term
Definition
What is the point of contact between the nerve ending and muscle fiber?
Neuromuscular junction
What is the chemical that is released when a nerve impulse passes through the neuromuscular junction for muscle contraction?
Acetylcholine
_____ is the end of the muscle attached to the more stationary bone.
Origin
_____ is the end of the muscle attached to the bone undergoing the greatest movement.
Insertion
_______ contract to stabilize.
Synergists
______ yields to agonist.
Antagonists
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| Term | Definition |
|---|---|
What is the point of contact between the nerve ending and muscle fiber? | Neuromuscular junction |
What is the chemical that is released when a nerve impulse passes through the neuromuscular junction for muscle contraction? | Acetylcholine |
_____ is the end of the muscle attached to the more stationary bone. | Origin |
_____ is the end of the muscle attached to the bone undergoing the greatest movement. | Insertion |
_______ contract to stabilize. | Synergists |
______ yields to agonist. | Antagonists |
The ______ is the muscle that is primarily responsible for a particular movement. | Prime mover |
There are ___ types of muscle. | 3 |
What occurs in an isometric muscle contraction? | The length of the muscle does not change but the amount of tension increases during the contraction process |
What occurs in an isotonic contraction? | The amount of tension produced by the muscle is constant during contraction but the muscle length changes |
What are the 3 types of muscle? | Skeletal; Cardiac; Smooth |
Sternocleidomastoids are located? | From ear to manubrium |
Trapezius muscles are located? | Shoulders |
Where are the deltoids located? | Outside of shoulder socket |
Pectoralis major is located? | Under breasts |
Rectus abdominis’ are located? | 6 pack |
Latissimus is located? | Under arm pits on side |
Obliques are located? | Posterior to latimiss, on side of hips |
Gluteus Maximus is? | “Big butt” |
Gluteus minimus are located? | Upper portion of butt |
The Rectus femorus are located? | Thigh |
The quadriceps are located? Also called? | Sides of thigh; Vastus |
Gastronomius is located? | Calf |
The sartorial muscle is located? | Outside of hip and inside part of knee |
Isometric muscles _ change shape during movement. | Does not |
Isotonic muscles change shape during movement. | Does; gets shorter |
Does shivering produce heat? | Yes, but not long term |