Question 1

Which of the following correctly lists the three types of muscle tissue found in the human body and a location for each?

Accepted Answer

Skeletal (attached to bones), Cardiac (heart), Smooth (walls of hollow organs)

Question 2

A patient is unable to elevate their mandible, making chewing difficult. Which muscle is most likely impaired?

Accepted Answer

Masseter

Question 3

Which connective tissue layer directly surrounds individual muscle fibers?

Accepted Answer

Endomysium

Question 4

A person suffers damage to the phrenic nerve. Which muscle's function will be most affected, and what is its primary action?

Accepted Answer

Diaphragm; inspiration (breathing in)

Question 5

Which muscle is responsible for smiling by elevating the corners of the mouth?

Accepted Answer

Zygomaticus major

Question 6

Given the following muscle naming pattern: 'biceps brachii,' which part of the name indicates the number of origins, and what does it mean?

Accepted Answer

'biceps'; two origins

Question 7

Which abdominal muscle is primarily responsible for compressing the abdominal contents and stabilizing the trunk?

Accepted Answer

Transversus abdominis

Question 8

A patient presents with difficulty retracting their scapula. Which muscle is most likely weakened?

Accepted Answer

Rhomboid major

Question 9

Which muscle is NOT part of the rotator cuff group?

Accepted Answer

Teres major

Question 10

If a person cannot flex their neck to bring their chin to their chest, which muscle is most likely impaired?

Accepted Answer

Sternocleidomastoid

Question 11

Which muscle assists with ventilation and is located between the ribs?

Accepted Answer

Intercostals

Question 12

A patient has paralysis of the orbicularis oculi muscle. What function will be most affected?

Accepted Answer

Closing the eyelids

Question 13

Which muscle is primarily responsible for elevating the shoulders (shrugging)?

Accepted Answer

Trapezius

Question 14

Which muscle is located on the anterior chest and is responsible for flexing, adducting, and medially rotating the humerus?

Accepted Answer

Pectoralis major

Question 15

Which of the following best describes the anatomical relationship between a tendon and a muscle?

Accepted Answer

A tendon connects muscle to bone

Question 16

A patient has difficulty abducting their arm at the shoulder. Which muscle is most likely affected?

Accepted Answer

Deltoid

Question 17

Which muscle is responsible for compressing the cheeks during blowing or sucking?

Accepted Answer

Buccinator

Question 18

Which muscle is most important for trunk flexion, such as when performing a sit-up?

Accepted Answer

Rectus abdominis

Question 19

A patient presents with winged scapula, a condition where the scapula protrudes posteriorly. Which muscle is most likely paralyzed?

Accepted Answer

Serratus anterior

Question 20

Which muscle is responsible for elevating the eyebrows and wrinkling the forehead?

Accepted Answer

Epicranius Frontalis

Muscle Types, Anatomy, and Major Muscles of the Human Body

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