Question 1

Which of the following best describes the general function of skeletal tissue and bones in the human body?

Accepted Answer

They provide structural support, protect vital organs, facilitate movement, and serve as sites for hematopoiesis.

Question 2

Red bone marrow is primarily responsible for which physiological process?

Accepted Answer

Production of blood cells through hematopoiesis.

Question 3

Which cell type is responsible for bone resorption, and what is the name of the process it uses?

Accepted Answer

Osteoclast; Howship's lacuna (resorption bay)

Question 4

Compact bone contains which of the following structural features that allow for the passage of blood vessels and nerves?

Accepted Answer

Haversian canals (central canals)

Question 5

Which equation correctly represents the chemical reaction for the formation of hydroxyapatite crystals in bone matrix?

Accepted Answer

$$10Ca^{2+} + 6PO$$_$$4^{3-} + 2OH$$^- \rightarrow Ca_{10}($$PO_4)_6(OH)_2$

Question 6

A patient presents with a fracture at the epiphyseal plate. Which of the following is a likely consequence?

Accepted Answer

Impaired longitudinal bone growth due to disruption of endochondral ossification.

Question 7

Which bone landmark is best described as a rounded articular projection that helps form joints?

Accepted Answer

Condyle

Question 8

During bone remodeling, which feedback mechanism regulates calcium levels in the blood?

Accepted Answer

Negative feedback involving parathyroid hormone (PTH) and calcitonin.

Question 9

Which of the following best describes the difference between spongy bone and compact bone?

Accepted Answer

Spongy bone is composed of trabeculae and is found at the ends of long bones, while compact bone is dense and forms the outer layer of bones.

Question 10

Which process is responsible for the formation of most bones in the human body, especially long bones?

Accepted Answer

Endochondral ossification

Question 11

A child suffers a fracture that disrupts the metaphysis of the femur. Which type of bone growth is most likely affected?

Accepted Answer

Endochondral ossification at the epiphyseal plate

Question 12

Which of the following is NOT a function of osteoblasts?

Accepted Answer

Bone resorption via acid secretion

Question 13

Which structure in compact bone allows for communication between osteocytes and the exchange of nutrients?

Accepted Answer

Canaliculi

Question 14

Which type of bone is characterized by a dense outer layer and a network of internal spaces filled with marrow?

Accepted Answer

Compact bone

Question 15

Which of the following best describes the role of the periosteum in bone health?

Accepted Answer

It provides a surface for ligament and tendon attachment and contains osteogenic cells for bone growth and repair.

Question 16

Which bone landmark is a sharp, slender projection often serving as a point of muscle attachment?

Accepted Answer

Spine

Question 17

During intramembranous ossification, which of the following is the primary center for bone formation?

Accepted Answer

Ossification center within mesenchymal tissue

Question 18

Which of the following best explains the effect of parathyroid hormone (PTH) on bone remodeling?

Accepted Answer

PTH stimulates osteoclast activity, increasing bone resorption and raising blood calcium levels.

Question 19

Which of the following is a correct sequence of events in the healing of a bone fracture?

Accepted Answer

Formation of hematoma, fibrocartilaginous callus, bony callus, bone remodeling

Question 20

Which equation best represents the negative feedback regulation of blood calcium by parathyroid hormone (PTH)?

Accepted Answer

$$	ext{Low } [Ca$$^{2+}$$]_{blood} ightarrow 	ext{PTH release} ightarrow 	ext{Increased bone resorption} ightarrow 	ext{Higher } [Ca$$^{2+}$$]_{blood}$$

Skeletal Tissue and Bone Structure: Study Notes for Anatomy & Physiology

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