Question 1

Which structure is responsible for housing osteocytes within compact bone?

Accepted Answer

Lacunae

Question 2

A patient presents with a fracture at the surgical neck of the humerus. Which nearby anatomical structure is most at risk of injury?

Accepted Answer

Axillary nerve

Question 3

Which bone contains the foramen magnum?

Accepted Answer

Occipital bone

Question 4

What is the function of canaliculi in compact bone?

Accepted Answer

Connect osteocytes for nutrient and waste exchange

Question 5

Which of the following best describes the difference between bones treated with acid and baked bones?

Accepted Answer

Acid removes minerals, leaving the bone flexible; baking removes the organic matrix, leaving the bone brittle.

Question 6

Which part of the vertebrae is responsible for the passage of the spinal cord?

Accepted Answer

Vertebral foramen

Question 7

A newborn's skull contains fontanels. What is the primary function of these fontanels?

Accepted Answer

Permit the skull to change shape during childbirth

Question 8

Which bone forms the only movable joint in the skull?

Accepted Answer

Mandible

Question 9

Which structure of the scapula articulates with the head of the humerus?

Accepted Answer

Glenoid cavity

Question 10

Which ribs are called 'floating ribs' and why?

Accepted Answer

Ribs 11-12; they do not attach to the sternum at all.

Question 11

Which part of the humerus is a common site of fractures, especially in elderly patients?

Accepted Answer

Surgical neck

Question 12

Which structure is found in the cervical vertebrae but not in thoracic or lumbar vertebrae?

Accepted Answer

Transverse foramina

Question 13

The tibial tuberosity serves as the insertion point for which muscle group?

Accepted Answer

Quadriceps femoris

Question 14

Which equation best represents the relationship between bone mass ($$M$$), mineral content ($$C_m$$), and organic matrix ($$C_o) in a $$healthy adult bone?

Accepted Answer

$$M = C_m + C_o$$

Question 15

Which of the following is NOT a component of the osteon in compact bone?

Accepted Answer

Matrix

Question 16

A patient with osteoporosis has decreased bone mineral density. Which property of bone is most affected?

Accepted Answer

Strength and resistance to compression

Question 17

Which suture separates the parietal bones from the occipital bone?

Accepted Answer

Lambdoid suture

Question 18

Which anatomical landmark is used for intramuscular injections in the hip?

Accepted Answer

Greater trochanter

Question 19

Which bone forms the lateral projection of the ankle?

Accepted Answer

Fibula

Question 20

Which equation describes the force ($$F) $$required to fracture a bone, given bone strength ($$S) $$and cross-sectional area ($$A$$)?

Accepted Answer

$$F = S 	imes A$$

Skeletal System: Bones, Cartilage, and Key Structures

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