Question 1

Which connective tissue layer directly surrounds individual muscle fibers in skeletal muscle?

Accepted Answer

Endomysium

Question 2

A muscle with fascicles that run parallel to the long axis of the muscle and attach to tendons of similar width is best classified as which muscle shape?

Accepted Answer

Parallel

Question 3

The pectoralis major muscle is an example of which muscle shape, characterized by a broad origin and fascicles converging to a single tendon?

Accepted Answer

Convergent

Question 4

Which of the following best describes a unipennate muscle?

Accepted Answer

Fascicles attach obliquely to one side of the tendon

Question 5

A muscle that acts as the primary force generator for a specific movement is called the:

Accepted Answer

Agonist

Question 6

Which lever class is exemplified by rising up on your tiptoes, where the load is between the fulcrum and the applied force?

Accepted Answer

Second-class lever

Question 7

If a muscle is named 'flexor pollicis longus,' what can you infer about its function and location?

Accepted Answer

It flexes the thumb and is a long muscle

Question 8

Which muscle shape is best suited for producing the greatest range of motion but not the greatest force?

Accepted Answer

Parallel

Question 9

A muscle that stabilizes a joint and prevents unwanted movement during an action is called a:

Accepted Answer

Fixator

Question 10

Which of the following best describes the function of the perimysium?

Accepted Answer

Surrounds bundles of muscle fibers (fascicles)

Question 11

A patient presents with a 'knot' in their upper back muscle after strenuous exercise. This is most likely a:

Accepted Answer

Fascial trigger point

Question 12

Which muscle shape is characterized by fascicles arranged in concentric rings and is typically found around body openings?

Accepted Answer

Circular

Question 13

Given the following lever equation for mechanical advantage: $$MA = \frac{	ext{length of effort arm}}{	ext{length of load arm}}$$, which lever system would have a mechanical advantage greater than 1?

Accepted Answer

When the effort arm is longer than the load arm

Question 14

Which of the following is an example of a muscle named for its origin and insertion?

Accepted Answer

Sternocleidomastoid

Question 15

A muscle with fascicles that attach obliquely to both sides of a central tendon is classified as:

Accepted Answer

Bipennate

Question 16

Which of the following best describes the function of a synergist muscle?

Accepted Answer

Assists the agonist by adding extra force or reducing undesirable movements

Question 17

If a muscle is described as 'fusiform,' what is its general shape?

Accepted Answer

Thick in the middle and tapered at both ends

Question 18

Which of the following is true regarding the arrangement of fascicles in a multipennate muscle?

Accepted Answer

Fascicles are arranged at multiple angles around several tendons

Question 19

Which of the following best explains why parallel muscles are not as strong as pennate muscles of the same size?

Accepted Answer

Parallel muscles have fewer muscle fibers in a given cross-sectional area

Question 20

A muscle that wraps around a bone, such as the supinator muscle of the forearm, is best described as having which shape?

Accepted Answer

Spiral

The Muscular System: Structure, Shapes, and Functional Organization

Guida di studio - Domande di pratica

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