Question 1

Which fascicle arrangement allows for the greatest range of motion but typically produces less power compared to other arrangements?

Accepted Answer

Parallel

Question 2

A patient is unable to close their eye after a facial injury. Which muscle is most likely damaged?

Accepted Answer

Orbicularis oculi

Question 3

The biceps brachii is classified as which type of muscle based on fascicle arrangement?

Accepted Answer

Parallel

Question 4

Which muscle acts as the prime mover (agonist) for flexion of the elbow joint?

Accepted Answer

Biceps brachii

Question 5

A muscle named 'flexor carpi ulnaris' most likely has which of the following actions?

Accepted Answer

Flexes the wrist on the ulnar side

Question 6

Which muscle group is responsible for extension of the knee joint?

Accepted Answer

Quadriceps femoris

Question 7

If a muscle has its origin on the sternum and clavicle and inserts on the mastoid process, what is its name?

Accepted Answer

Sternocleidomastoid

Question 8

Which muscle is primarily responsible for compressing the cheeks, as in whistling or blowing?

Accepted Answer

Buccinator

Question 9

A muscle with a bipennate fascicle arrangement is likely to:

Accepted Answer

Have fascicles on both sides of a central tendon

Question 10

Which equation best represents the relationship between muscle force ($$F$$), cross-sectional area ($$A$$), and muscle tension ($$T$$)?

Accepted Answer

$$F = A 	imes T$$

Question 11

A patient presents with difficulty elevating their scapula. Which muscle is most likely impaired?

Accepted Answer

Levator scapulae

Question 12

Which muscle is the antagonist to the biceps brachii during elbow flexion?

Accepted Answer

Triceps brachii

Question 13

Which muscle is responsible for plantar flexion of the foot and inserts via the Achilles tendon?

Accepted Answer

Gastrocnemius

Question 14

Which muscle group is primarily responsible for adduction of the thigh?

Accepted Answer

Adductor group (longus, brevis, magnus)

Question 15

A muscle named 'rectus abdominis' is classified based on which characteristic?

Accepted Answer

Direction of fibers

Question 16

Which muscle is the main extensor of the vertebral column?

Accepted Answer

Erector spinae

Question 17

If a muscle originates on the pubis and inserts on the medial surface of the femur, what is its likely action?

Accepted Answer

Adduction of the thigh

Question 18

Which muscle is responsible for flexion of the hip joint and originates from the iliac fossa?

Accepted Answer

Iliacus

Question 19

A patient is unable to smile after a stroke. Which muscle is most likely affected?

Accepted Answer

Zygomaticus major

Question 20

Which muscle forms the major portion of the pelvic diaphragm and is essential for supporting pelvic organs?

Accepted Answer

Levator ani

BIOL 3320 Human Anatomy & Physiology I: Course Introduction and Instructor Information

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