Q: Which equation correctly represents the mechanical advantage (MA) of a lever system in the human body?

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

Q: Which equation represents the calculation of range of motion (ROM) in degrees for a joint?

$$ROM = \theta_{final} - \theta_{initial}$$

Question 1

Which of the following best describes a synovial joint?

Accepted Answer

A joint characterized by a fluid-filled cavity, articular cartilage, and a joint capsule, allowing free movement.

Question 2

Which anatomical feature is NOT found in all synovial joints?

Accepted Answer

Menisci (articular disks)

Question 3

A football player sustains a lateral blow to the knee, resulting in a torn meniscus. Which type of joint is affected and what is the primary function of the meniscus?

Accepted Answer

Synovial joint; acts as a shock absorber and improves fit between articulating bones

Question 4

Which equation correctly represents the mechanical advantage (MA) of a lever system in the human body?

Accepted Answer

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

Question 5

Which joint type is correctly paired with its example and movement capability?

Accepted Answer

Cartilaginous joint – pubic symphysis – slightly movable

Question 6

During a biceps curl, which part of the lever system does the elbow joint represent?

Accepted Answer

Fulcrum

Question 7

Which muscle is primarily responsible for inspiration by expanding the thoracic cavity?

Accepted Answer

Diaphragm

Question 8

A patient presents with a herniated intervertebral disk. Which structure is most likely to be damaged?

Accepted Answer

Nucleus pulposus

Question 9

Which movement increases the angle between the top of the foot and the front of the leg?

Accepted Answer

Plantar flexion

Question 10

Which of the following is NOT a function of the bursa in synovial joints?

Accepted Answer

Connecting bones directly to each other

Question 11

Which muscle group is responsible for chewing movements?

Accepted Answer

Masseter and temporalis

Question 12

Which type of synovial joint allows movement in three perpendicular planes?

Accepted Answer

Ball-and-socket joint

Question 13

Which of the following best describes the origin of a muscle?

Accepted Answer

The point of attachment that does not move when the muscle contracts

Question 14

Which equation represents the calculation of range of motion (ROM) in degrees for a joint?

Accepted Answer

$$ROM = 	heta_{final} - 	heta_{initial}$$

Question 15

Which muscle is NOT part of the abdominal wall?

Accepted Answer

Latissimus dorsi

Question 16

Which of the following movements is an example of circumduction?

Accepted Answer

Moving the arm in a circular motion at the shoulder

Question 17

Which muscle is primarily responsible for flexion of the neck?

Accepted Answer

Sternocleidomastoid

Question 18

Which of the following is a correct statement about the structure of skeletal muscle?

Accepted Answer

Muscle fibers are grouped into fascicles, which are surrounded by connective tissue sheaths.

Question 19

Which joint is most vulnerable to injury during athletic activity due to its complex structure?

Accepted Answer

Knee joint

Question 20

Which of the following is NOT a way muscles are named?

Accepted Answer

Type of joint they move

Support & Movement: Articulations and Axial Muscles

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