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Kinesiology > Muscles > Flashcards

Muscles Flashcards

1
Q

What type of muscle is responsible for bodily movement?

A

Skeletal muscles

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2
Q

What is the function of the antagonist muscle?

A

It lengthens

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3
Q

What is the function of the agonist muscle?

A

contracts

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4
Q

What is the origin of a muscle?

A

the immovable end of the joint, and the point where the muscle attaches to the more stationery bone

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5
Q

What type of muscle fibre is required for endurance activities?

A

Slow twitch (type 1)

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6
Q

What is the main source of ATP during endurance activities?

A

cellular respiration

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7
Q

what is the function of the sarcoplasmic reticulum?

A

It transports electrochemical substances involved in muscle activation

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8
Q

Which part of the heart acts as the pacemaker?

A

Sinoatrial node (SA node)

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9
Q

What is the formula for calculating cardiac output?

A

Heart Rate x Stroke Volume

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10
Q

What is the function of the respiratory system?

A

To supply oxygen to the blood, To remove carbon dioxide from the blood, To regulate blood pH

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11
Q

What is the function of the respiratory system?

A

To supply oxygen to the blood, To remove carbon dioxide from the blood, To regulate blood pH

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12
Q

What is VO2max?

A

The maximum amount of oxygen that the body can consumed

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13
Q

What factors contribute to a higher V02max?

A

Heredity and training, Age and sex, Body composition and tung capacity

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14
Q

What is the purpose of breathing heavily during exercise?

A

To take in more oxygen,
To exhale more carbon dioxide, to regulate blood PH

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15
Q

Which type of muscle contraction causes the angle between joints to decrease?

A

Concentric

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16
Q

What is the main function of carbohydrates in the body?

A

To provide energy for cells, To build cell membranes, To store glucose in the muscles

17
Q

What is the role of ATP in muscle contraction?

A

It provides energy for muscle contraction

18
Q

What is the purpose of the pericardium?

A

To protect the heart

19
Q

What is the function of arterioles in the cardiovascular system?

A

To regulate blood pressure and flow

20
Q

What is the sliding filament theory?

A

actin filaments moving closer together and sarcomere shortening

21
Q

What is the purpose of the AV node in the heart?

A

To delay ventricular contraction and allow atria to complete contraction

22
Q

What is the purpose of the ECG in measuring heart activity?

A

To provide a graphical representation of the electrical sequence of heart contraction

23
Q

Which type of muscle tissue is responsible for involuntary movements, such as contraction of the stomach and intestines?

A

Smooth muscles

24
Q

What is the insertion of a muscle?

A

The movable end of the joint, The point where the muscle attaches to the bone that is moved most

25
Q

Which type of muscle fiber is responsible for explosive, powerful movements?

A

Type 2b (Fast Glycolytic)

26
Q

What is the main source of ATP during high-intensity, short-duration activities?

A

ATP-PC system

27
Q

Which part of the heart receives oxygenated blood from the lungs?

A

Left atrium

28
Q

What is the function of the alveols in the respiratory system?

A

To regulate blood pH, To enable-gas exchange between air and blood

29
Q

What protein puts out the crossbridges to help contraction happen?

A

Myosin

30
Q

What is the role of fats in the body during long distance exercise?

A

To provide energy for cells

31
Q

What is the purpose of the mitral/bicupsid valve in the heart?

A

To prevent backflow of blood from the left ventricle to the left atrium

32
Q

What is the difference between aerobic and anaerobic exercise?

A

Aerobic exercise requires oxygen, while anaerobic exercise does not

33
Q

What is the purpose of the SA node in the heart?

A

To initiate the electrical signals for heart contraction

34
Q

Which type of muscle fiber is responsible for explosive, powerful movements?

A

Type 2b (Fast Glycolytic)

35
Q

What is the main source of ATP during high-intensity, short-duration (0-15 sec) activities?

A

ATP-PC system

36
Q

Which part of the heart receives
oxygenated blood from the lungs?

A

Left atrium

37
Q

What metabolic pathway has lactic acid as a byproduct during ATP resynthesis?

A

Glycolysis

38
Q

What is a sarcomere?

A

the contractile unit in a muscle fibre

Kinesiology (2 decks)

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