Question 1

Which of the following best describes the arrangement and functional advantage of pennate muscles compared to parallel muscles?

Accepted Answer

Pennate muscles have fibers that attach obliquely to a tendon, allowing for greater force production but less range of motion compared to parallel muscles.

Question 2

A patient is unable to extend their knee after a sports injury. Which muscle group is most likely affected?

Accepted Answer

Quadriceps femoris

Question 3

Which lever class is most common in the human body and what is its primary advantage?

Accepted Answer

Third-class lever; increases speed and range of motion at the expense of force

Question 4

The biceps brachii muscle is an example of which fascicle arrangement, and what is a key functional characteristic of this arrangement?

Accepted Answer

Parallel; allows for greater range of motion but less force

Question 5

Which muscle is primarily responsible for abduction of the arm at the shoulder joint?

Accepted Answer

Deltoid

Question 6

A muscle named 'flexor carpi radialis' most likely performs which action?

Accepted Answer

Flexes the wrist on the radial side

Question 7

Which of the following muscles is a synergist to the biceps brachii during elbow flexion?

Accepted Answer

Brachialis

Question 8

Which muscle group is primarily responsible for plantar flexion at the ankle during activities such as jumping?

Accepted Answer

Gastrocnemius and soleus

Question 9

If a muscle is named 'rectus abdominis,' what does the term 'rectus' indicate about its fascicle arrangement?

Accepted Answer

The muscle fibers run parallel to the long axis

Question 10

Which of the following best describes the role of the diaphragm in the body?

Accepted Answer

It divides the thoracic and abdominopelvic cavities and is the primary muscle of respiration

Question 11

A muscle that originates on the scapula and inserts on the radius, producing flexion at the elbow, is most likely the:

Accepted Answer

Biceps brachii

Question 12

Which of the following is a function of the muscles of the pelvic floor?

Accepted Answer

Support pelvic organs and control movement through the urethra and anus

Question 13

Which muscle is responsible for lateral rotation of the shoulder joint?

Accepted Answer

Infraspinatus

Question 14

Which of the following best describes the difference between axial and appendicular muscles?

Accepted Answer

Axial muscles position the head, vertebral column, and rib cage, while appendicular muscles move and support the limbs.

Question 15

Which muscle is the primary agonist for flexion at the hip joint?

Accepted Answer

Iliopsoas

Question 16

A muscle named 'extensor carpi ulnaris' would most likely:

Accepted Answer

Extend and adduct the wrist on the ulnar side

Question 17

Which of the following is a real-life example of a second-class lever in the human body?

Accepted Answer

Extension of the foot at the ankle when standing on tiptoe

Question 18

Which muscle is primarily responsible for closing the mouth by elevating the mandible?

Accepted Answer

Masseter

Question 19

Which of the following best describes the role of synergists in muscle movement?

Accepted Answer

They assist the agonist by providing additional force or stabilizing joints.

Question 20

During a biceps curl, which muscle acts as the antagonist?

Accepted Answer

Triceps brachii

Chapter 11: The Muscular System – Structured Study Notes

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드