Question 1

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

Accepted Answer

Primary storage site in the body for sodium and potassium salts

Question 2

Which structure is the main source of blood to the medullary cavity of a long bone?

Accepted Answer

Nutrient artery

Question 3

Which of the following best describes the difference between red bone marrow and yellow bone marrow?

Accepted Answer

Red bone marrow produces red blood cells, while yellow bone marrow stores triglycerides.

Question 4

Which statement about bone tissue is FALSE?

Accepted Answer

The inorganic matrix of bone is solely responsible for the strength of bone tissue.

Question 5

The subunit of compact bone is the _______. It consists of rings of bone matrix called _______ that surround a structure called the _______ that contains blood vessels and nerves.

Accepted Answer

Osteon; lamellae; central canal

Question 6

The branching pieces of bone in spongy bone are called:

Accepted Answer

Trabeculae

Question 7

Which bones form via intramembranous ossification?

Accepted Answer

Certain flat bones

Question 8

Which of the following is a property unique to endochondral ossification?

Accepted Answer

Bone is formed via a hyaline cartilage model.

Question 9

The part of the epiphysis that does NOT ossify during a person’s lifetime is the:

Accepted Answer

Articular surface

Question 10

Long bones grow in length from the:

Accepted Answer

Epiphyseal plate

Question 11

Which hormone increases the rate of bone growth during puberty by stimulating both growth and ossification of the epiphyseal plate?

Accepted Answer

Estrogen

Question 12

Bone deposition is carried out by _______, which secrete the _______ of the ECM by exocytosis.

Accepted Answer

Osteoblasts; organic matrix

Question 13

Which of the following statements about bone remodeling is TRUE?

Accepted Answer

Bone deposition is triggered by tension placed on the bone.

Question 14

Which hormone increases blood calcium ion concentration by increasing the activity of osteoclasts?

Accepted Answer

Parathyroid hormone

Question 15

Vitamin D is required for which of the following processes?

Accepted Answer

Calcium ion absorption from the intestines and retention in the kidneys

Question 16

Order the steps of fracture repair correctly:

Accepted Answer

Damaged blood vessels bleed and fill the gap with a hematoma → Fibroblasts, chondroblasts, and blood vessels enter the clot and form a soft callus → Osteoblasts in the periosteum lay down a bone callus of primary bone → The bone callus is remodeled and replaced with secondary bone

Question 17

A patient has a genetic defect causing lysosomes in her osteoclasts to be unable to maintain an acidic pH. What is the most likely consequence for her bones?

Accepted Answer

Reduced bone resorption leading to abnormally dense bones

Question 18

Which of the following equations correctly represents the chemical formula for hydroxyapatite, the primary mineral in bone?

Accepted Answer

$$Ca_{10}(PO_4$)_6(OH)_2$$

Question 19

A surgeon accidentally strips the periosteum during fracture repair. What is the most likely outcome?

Accepted Answer

Delayed or impaired bone healing due to loss of osteogenic cells

Question 20

Which of the following best describes the role of osteocytes in bone tissue?

Accepted Answer

They are mature osteoblasts that maintain bone matrix and communicate via canaliculi.

A&P I Chapter 6: Skeletal System Study Guide – Step-by-Step Guidance

Study Guide - Practice Questions

Study Guide - Flashcards