$$Bone\ Mass = Volume \times Density$$

Question 1

Which of the following best describes the primary function of osteoclasts in bone tissue?

Accepted Answer

Osteoclasts break down bone matrix, releasing minerals into the blood.

Question 2

Which equation best represents the process of bone mineralization?

Accepted Answer

$$Ca^{2+}$$ + $$PO_4$$^{3-} \rightarrow $$Ca_3$$($$PO_4)_2$

Question 3

Which bone marking is most likely to serve as a passageway for blood vessels and nerves?

Accepted Answer

Foramen

Question 4

A patient presents with a fracture in the shaft of the femur. Which part of the long bone is affected?

Accepted Answer

Diaphysis

Question 5

Which of the following is NOT a function of the skeletal system?

Accepted Answer

Hormone secretion

Question 6

Which vertebrae are known as the atlas and axis, and what is their primary function?

Accepted Answer

C1 and C2; allow rotation and nodding of the head

Question 7

Which spinal curves are present at birth, and which develop later?

Accepted Answer

Primary curves (thoracic and sacral) are present at birth; secondary curves (cervical and lumbar) develop after birth.

Question 8

Which type of joint allows the greatest range of movement and is found at the shoulder and hip?

Accepted Answer

Ball-and-socket joint

Question 9

What is appositional growth in bone?

Accepted Answer

Growth in diameter by adding new layers to the outside of bone

Question 10

Which equation best represents the relationship between bone mass and mineral density?

Accepted Answer

$$Bone\ Mass = Volume 	imes Density$$

Question 11

Which movement is described as decreasing the angle between two bones, such as bending the elbow?

Accepted Answer

Flexion

Question 12

Which bone is classified as an irregular bone?

Accepted Answer

Vertebra

Question 13

Which structure runs through the center of an osteon and contains blood vessels and nerves?

Accepted Answer

Central canal

Question 14

Which of the following best describes the difference between cartilage and bone?

Accepted Answer

Cartilage is flexible and lacks mineralization, bone is rigid and mineralized.

Question 15

Which joint type is found between the radius and the proximal carpal bones, allowing movement in two planes?

Accepted Answer

Condylar (ellipsoidal) joint

Question 16

Which bone forms the posterior portion of the skull and contains the foramen magnum?

Accepted Answer

Occipital bone

Question 17

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

Accepted Answer

Abduction

Question 18

Which bone is part of the pectoral girdle?

Accepted Answer

Clavicle

Question 19

Which suture connects the frontal bone to the parietal bones?

Accepted Answer

Coronal suture

Question 20

Which equation best represents the calculation of bone density using mass and volume?

Accepted Answer

$$Density = \frac{Mass}{Volume}$$

Comprehensive Study Guide: The Skeletal System

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