Q: Which of the following equations correctly represents the calculation of the mechanical advantage (MA) of a lever in the human body?

$$MA = \frac{\text{effort arm}}{\text{load arm}}$$

Question 1

Which bone forms the base of the cranial cavity and contains the sella turcica, which houses the pituitary gland?

Accepted Answer

Sphenoid bone

Question 2

A patient presents with a fracture to the infraorbital foramen. Which bone is most likely affected?

Accepted Answer

Maxilla

Question 3

Which of the following bones does NOT contribute to the formation of the orbit?

Accepted Answer

Mandible

Question 4

The zygomatic arch is formed by the union of processes from which two bones?

Accepted Answer

Zygomatic and temporal bones

Question 5

Which bone is located at the anterior base of the skull and contains the cribriform plate, allowing passage of olfactory nerves?

Accepted Answer

Ethmoid bone

Question 6

A football player suffers a blow to the lateral aspect of the skull, resulting in a fracture of the bone that forms the prominence of the cheek. Which bone is fractured?

Accepted Answer

Zygomatic bone

Question 7

Which of the following is TRUE regarding the mandible?

Accepted Answer

It is the only movable bone of the skull

Question 8

The pectoral girdle consists of which two bones?

Accepted Answer

Clavicle and scapula

Question 9

A patient has difficulty rotating their forearm. Which bones are directly involved in this movement?

Accepted Answer

Radius and ulna

Question 10

Which of the following equations correctly represents the calculation of the mechanical advantage (MA) of a lever in the human body?

Accepted Answer

$$MA = \frac{	ext{effort arm}}{	ext{load arm}}$$

Question 11

A patient presents with a fracture to the acetabulum. Which joint is most likely affected?

Accepted Answer

Hip joint

Question 12

Which bone forms the posterior portion of the hard palate?

Accepted Answer

Palatine bone

Question 13

A patient is unable to flex their forearm at the elbow. Which articulation is most likely compromised?

Accepted Answer

Humeroulnar joint

Question 14

Which bone is NOT part of the axial skeleton?

Accepted Answer

Scapula

Question 15

Which of the following best describes the function of the foramen magnum?

Accepted Answer

Allows passage of the spinal cord from the brain

Question 16

A patient has a fracture of the lateral malleolus. Which bone is affected?

Accepted Answer

Fibula

Question 17

Which equation correctly represents the calculation of bone density ($$\rho) $$given mass ($$m) $$and volume ($$V$$)?

Accepted Answer

$$\rho = \frac{m}{V}$$

Question 18

Which bone articulates with the tibia to form the knee joint?

Accepted Answer

Femur

Question 19

A patient presents with a fracture to the olecranon process. Which bone is affected?

Accepted Answer

Ulna

Question 20

Which of the following bones is classified as an irregular bone?

Accepted Answer

Vertebra

Study Notes: The Skeletal System – Anatomy of the Skull and Axial Skeleton

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