$$MA = \frac{\text{Effort Arm}}{\text{Load Arm}}$$

Question 1

Which of the following is a structural property shared by all fibrous joints?

Accepted Answer

They are connected by dense connective tissue, primarily collagen.

Question 2

Which of the following is NOT a category of fibrous joints?

Accepted Answer

Symphysis

Question 3

Where are sutures typically located in the human body, and what is their primary function?

Accepted Answer

Between the bones of the skull; to provide stability and protection

Question 4

Which ligament anchors a tooth into its socket in a gomphosis joint?

Accepted Answer

Periodontal ligament

Question 5

What is the singular form of the word 'gomphoses'?

Accepted Answer

Gomphosis

Question 6

Which type of cartilaginous joint is found between the first rib and the sternum?

Accepted Answer

Synchondrosis

Question 7

Which of the following best describes a symphysis joint?

Accepted Answer

Bones are joined by fibrocartilage and allow limited movement.

Question 8

Which movement is described as moving a body part away from the midline?

Accepted Answer

Abduction

Question 9

A patient is unable to rotate their forearm so that the palm faces upward. Which movement is impaired?

Accepted Answer

Supination

Question 10

Which of the following best describes the connective tissue that surrounds a skeletal muscle cell?

Accepted Answer

Endomysium

Question 11

The connective tissue surrounding a muscle cell is continuous with which structure in the bone?

Accepted Answer

Periosteum

Question 12

Which of the following is another term for a skeletal muscle cell?

Accepted Answer

Muscle fiber

Question 13

Which lever system in the body is exemplified by the action of the triceps brachii during elbow extension?

Accepted Answer

First-class lever

Question 14

A lever works at a mechanical advantage when:

Accepted Answer

The effort arm is longer than the load arm.

Question 15

Which movement occurs when you bend your elbow to bring your hand toward your shoulder?

Accepted Answer

Flexion

Question 16

Which of the following muscle shapes is best suited for generating the greatest force?

Accepted Answer

Pennate

Question 17

Which term describes the muscle that provides most of the force for a given movement?

Accepted Answer

Agonist (prime mover)

Question 18

If a muscle contracts and moves the insertion toward the origin, which type of movement is most likely occurring?

Accepted Answer

Flexion

Question 19

Which of the following equations correctly represents mechanical advantage in a lever system?

Accepted Answer

$$MA = \frac{	ext{Effort Arm}}{	ext{Load Arm}}$$

Question 20

A patient presents with a muscle knot in their upper back. Which of the following is a likely cause?

Accepted Answer

Overuse and sustained muscle contraction leading to localized spasm

RAT 10 (BMSP 2135)

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