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GMS-MyologyReview

GMS-MyologyReviewQuestions

QuestionAnswer
Define Intercalated Disks. Modified plasma membrane in cardiac tissue allowing rapid transfer of electrical impulses btw cells
List in order smallest to largest part of muscle layers Fascile Muscle Fiber. Fiber,Fascile,Muscle
List membranes in order fr deepest to superficial Perimysium Epimysium Endomysium. Endomysium, Perimysium, Epimysium
What two filaments combine to form the cross-bridge? Actin&Myosin
Where does calcium go when a muscle relaxes? Sarcoplasmic Recticulum
What is the byproduct of anaerobic exercise? Lactid Acid
Name the function of Myoglobin. stores oxygen
Name the function of Glycogen. stores glucose
Name the function of Creatine Phosphate. stores energy
True or False,Exercise results in dilation of blood vessels. True
Muscle Tone Partially contracted state even when muscle not in use
What kind of muscles are the intestines? Smooth muscle
Name the neurotransmitter involved in muscular contraction. Acetylcholine
Hypertrophy Use of and increase in size of a part
What is a muscle that opposes a given action called? antagonist
Example of 3rd class lever action. Flexion of forearm
Flexion Bending motion that decreases angle btw bone at the joint
What does saco refer to? flesh
What term refers to a ring shaped muscle? orb
What is an aponeurosis? Broad sheet attach to bone or other muscles
What is sarcomere? Contracting sub unit of skeletal muscle
What does myo refer to? muscle
What is the energy compound that is needed for a power stroke? ATP
What kind of contraction shortens a muscle, but doesn't increase muscle tension? IsoTonic
What is a Motor Unit? Single neuron and all the muscle fibers it contracts.
A neuromuscular junction is an example of a _________. Synapse
What do you call muscles that steady body parts or assist the prime mover? Synergist
Muscle contraction requires__________ in the form of myoglobin energy
What process of oxygen consumption occurs in the PRESENCE of oxygen? Aerobic
What process of oxygen consumption occurs in the ABSENCE of oxygen? Anaerobic
What do you call a less moveable attachment site? Origin
What do you call a more moveable attachment site? Insertion
The muscle performing the action/movement is the Prime Mover
What do you call muscles that steady body parts or assist the prime mover? Synergist
What is the Law of Reciprocal Inhibition? For any given movement,the antagonist must RELAX when the prime mover CONTRACTS
What is a Lever? A rigid bar that moves about a fixed pivot point...the Fulcrum
What class Lever is the MOST in the body? Third Class Lever
An example of a 1st class lever-Effort>FULCRUM>Resistance(Force) would be Scissors
An example of a 2nd class lever- Effort>RESISTANCE(Force)>Fulcrum would be Wheelbarrow
An example of a 3rd class lever- Fulcrum>EFFORT>Resistance(Force) would be Tweezers (forearm flexion)
In the lever systems in the body the Bone is the Lever
In the lever systems in the body the Joint is the Fulcrum
In the lever systems in the body the Muscle is the Force/Effort
What are two properties of muscles? Excitability & Contractility
Define Excitability property of a muscle. Response to stimuli and conduct impulses
Define Contractility property of a muscle. Muscle able to shorten and change shape
What muscle contraction produces No Movement& remains same lenghth but Tone Increases? IsoMetric Contraction
Created by: Gina Massage
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