Question 1

Which bones are formed primarily through intramembranous ossification?

Accepted Answer

Flat bones of the skull and clavicle

Question 2

Where does the primary ossification center develop during endochondral ossification?

Accepted Answer

Diaphysis

Question 3

Which structure in bone persists for life and is important for nutrient supply?

Accepted Answer

Periosteum

Question 4

Arrange the steps of endochondral ossification in the correct order:

Accepted Answer

Cartilage model forms → Blood vessels invade → Primary ossification center develops → Secondary ossification centers form

Question 5

Which zone of the epiphyseal plate contains actively dividing cartilage cells?

Accepted Answer

Zone of proliferation

Question 6

What is appositional growth in bone?

Accepted Answer

Increase in bone width by adding new layers under the periosteum

Question 7

Which vitamin, synthesized in the skin upon exposure to UV light, is essential for bone health?

Accepted Answer

Vitamin D

Question 8

Which hormone increases osteoclast activity, leading to bone resorption?

Accepted Answer

Parathyroid hormone (PTH)

Question 9

A patient fractures their femur. What is the typical timeframe for bone repair?

Accepted Answer

Several weeks to months

Question 10

Which of the following is a function of the appendicular skeleton?

Accepted Answer

Facilitating movement of limbs

Question 11

What is the name of the hole in the occipital bone through which the spinal cord passes?

Accepted Answer

Foramen magnum

Question 12

Which bones form the pectoral girdle?

Accepted Answer

Scapula and clavicle

Question 13

Which bone is the upper arm bone?

Accepted Answer

Humerus

Question 14

How is the ulna positioned relative to the radius in the anatomical position?

Accepted Answer

Medial to the radius

Question 15

Which bone is the largest and strongest in the human body?

Accepted Answer

Femur

Question 16

What is the term for a freely movable joint?

Accepted Answer

Diarthrosis

Question 17

Which muscle is primarily responsible for smiling?

Accepted Answer

Zygomaticus major

Question 18

What is the function of the sarcoplasmic reticulum in skeletal muscle?

Accepted Answer

Stores and releases calcium ions ($$\mathrm{Ca$$^{2+}$$})$$

Question 19

Which process describes the binding of myosin heads to actin during muscle contraction?

Accepted Answer

Crossbridge formation

Question 20

What is the main product of glycolytic (anaerobic) catabolism in muscle cells?

Accepted Answer

Lactic acid

Anatomy & Physiology: Bone, Joint, and Muscle Study Guide – Step-by-Step Guidance

Study Guide - Practice Questions