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Muscular System and Exercise Physiology Quiz

#1

Which muscle is responsible for flexing the forearm?

Biceps brachii
Explanation

Biceps brachii flexes the forearm.

#2

What is the primary function of the deltoid muscle?

Abduction of the shoulder
Explanation

Deltoid muscle primarily abducts the shoulder.

#3

What is the recommended frequency of aerobic exercise for general health benefits?

Five times a week
Explanation

Five times a week is the recommended frequency of aerobic exercise for general health benefits.

#4

Which muscle is known as the 'quads' and is a group of four muscles at the front of the thigh?

Quadriceps
Explanation

Quadriceps, also known as 'quads,' is a group of four muscles at the front of the thigh.

#5

What is the term for the decrease in muscle mass and strength that occurs with aging?

Sarcopenia
Explanation

Sarcopenia is the decrease in muscle mass and strength with aging.

#6

Which muscle is responsible for plantar flexion of the foot?

Soleus
Explanation

Soleus muscle is responsible for plantar flexion of the foot.

#7

During exercise, what is the primary source of energy for short, intense bursts of activity, such as weightlifting or sprinting?

Carbohydrates
Explanation

Carbohydrates are the primary source of energy for short, intense bursts of activity.

#8

What is the term for the point at which a muscle fully contracts, and no further movement is possible?

Muscle contraction threshold
Explanation

Muscle contraction threshold is the point of full contraction with no further movement.

#9

What is the term for the muscle action where the muscle lengthens while producing tension?

Eccentric contraction
Explanation

Eccentric contraction is when the muscle lengthens while producing tension.

#10

Which hormone is responsible for promoting muscle growth and protein synthesis?

Testosterone
Explanation

Testosterone promotes muscle growth and protein synthesis.

#11

Which type of muscle fibers are primarily used for endurance activities such as long-distance running?

Type I fibers
Explanation

Type I fibers are primarily used for endurance activities like long-distance running.

#12

Which of the following is a benefit of stretching exercises for the muscles?

Reduced risk of injury
Explanation

Stretching exercises for muscles reduce the risk of injury.

#13

Which of the following is NOT a component of the SAID principle in exercise physiology?

Dynamic
Explanation

Dynamic is not a component of the SAID principle.

#14

What is the term for the excessive enlargement of muscles due to hypertrophy?

Muscular hypertrophy
Explanation

Muscular hypertrophy is the excessive enlargement of muscles due to hypertrophy.

#15

What is the phenomenon where a muscle becomes less responsive to a constant stimulus over time?

Muscle accommodation
Explanation

Muscle accommodation is when a muscle becomes less responsive to a constant stimulus over time.

#16

Which of the following is a function of the smooth muscle in the human body?

Involuntary movement
Explanation

Smooth muscle in the human body is responsible for involuntary movement.

#17

What is the term for the excessive curvature of the spine, often associated with weak abdominal muscles?

Lordosis
Explanation

Lordosis is the excessive curvature of the spine, often associated with weak abdominal muscles.

#18

In the context of muscle contractions, what does the term 'agonist' refer to?

Muscle responsible for the primary action
Explanation

In muscle contractions, 'agonist' refers to the muscle responsible for the primary action.

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