$\mathrm{ATP} \rightarrow \mathrm{ADP} + \mathrm{P_i} + \text{energy}$

$\mathrm{BMI} = \frac{\text{weight (kg)}}{\text{height (m)}^2}$

Question 1

Which of the following best describes the concept of 'force' as it applies to both physics and anatomy when discussing muscle contraction?

Accepted Answer

Force is the ability to move an object, whether that object is external or part of the body, and is generated by muscle contraction.

Question 2

A student is lifting a dumbbell in the gym. Which anatomical structure is primarily responsible for generating the force required to lift the weight?

Accepted Answer

Skeletal muscle fibers

Question 3

Which of the following is the most unstable chemical bond in muscle contraction, ready to break and release energy?

Accepted Answer

Phosphoanhydride bond in ATP

Question 4

If a muscle cell is unable to produce ATP, what immediate effect would this have on muscle contraction?

Accepted Answer

The muscle would be unable to contract or relax, leading to rigor.

Question 5

Which equation best represents the conversion of chemical energy to mechanical energy in muscle contraction?

Accepted Answer

$\mathrm{ATP} ightarrow \mathrm{ADP} + \mathrm{P_i} + 	ext{energy}$

Question 6

Which type of muscle tissue is primarily responsible for voluntary movement?

Accepted Answer

Skeletal muscle

Question 7

A patient is unable to extend their arm after an injury. Which anatomical term best describes the movement they cannot perform?

Accepted Answer

Extension

Question 8

Which of the following best explains why muscles can only pull and not push?

Accepted Answer

Muscles are attached to bones by tendons that only allow pulling.

Question 9

During a biceps curl, which type of contraction occurs as the muscle shortens while lifting the weight?

Accepted Answer

Concentric contraction

Question 10

Which of the following is NOT a major type of muscle tissue found in the human body?

Accepted Answer

Epithelial muscle

Question 11

A person is holding a heavy box without moving their arms. Which type of muscle contraction is occurring?

Accepted Answer

Isometric contraction

Question 12

Which anatomical term describes movement away from the midline of the body?

Accepted Answer

Abduction

Question 13

Which of the following best describes the role of tendons in the musculoskeletal system?

Accepted Answer

Tendons connect muscle to bone, transmitting the force of muscle contraction to produce movement.

Question 14

If a person suffers from muscle atrophy due to lack of use, which of the following is most likely to occur?

Accepted Answer

Decrease in muscle size and strength

Question 15

Which of the following equations correctly calculates body mass index (BMI)?

Accepted Answer

$\mathrm{BMI} = \frac{	ext{weight (kg)}}{	ext{height (m)}^2}$

Question 16

Which muscle tissue type is found only in the heart and is responsible for pumping blood throughout the body?

Accepted Answer

Cardiac muscle

Question 17

A person is performing a plank exercise, maintaining a static position. Which type of muscle contraction is primarily involved?

Accepted Answer

Isometric contraction

Question 18

Which of the following best explains the difference between origin and insertion of a muscle?

Accepted Answer

Origin is the stationary attachment, insertion is the movable attachment.

Question 19

Which of the following is a real-life example of eccentric muscle contraction?

Accepted Answer

Lowering a dumbbell slowly after a biceps curl

Question 20

Which of the following statements about muscle contraction is correct?

Accepted Answer

Muscle contraction can result in shortening, lengthening, or no change in length depending on the type of contraction.

Muscle Tissue: Structure, Function, and Physiology

Study Guide - Practice Questions