Q: Which of the following formulas correctly represents the calculation of bone density, given mass ($$m) $$and volume ($$V$$)?

$$\text{Bone Density} = \frac{m}{V}$$

Question 1

Which bone cell is primarily responsible for bone resorption, and what hormone stimulates its activity during low blood calcium levels?

Accepted Answer

Osteoclast; parathyroid hormone (PTH)

Question 2

A patient presents with osteoporosis, the most common bone disease. Which process is primarily increased in this condition, and which hormone is likely deficient?

Accepted Answer

Resorption; calcitonin

Question 3

Which bone houses the pituitary gland, and what is its anatomical location?

Accepted Answer

Sphenoid bone; base of the skull

Question 4

The coxal joint is classified as which type of synovial joint, and which bones articulate there?

Accepted Answer

Ball-and-socket; femur and pelvis

Question 5

Which movement describes decreasing the angle between two bones at a joint, such as bending the elbow?

Accepted Answer

Flexion

Question 6

Which muscle is the prime mover for inhalation, and which nerve innervates it?

Accepted Answer

Diaphragm; phrenic nerve

Question 7

Which connective tissue layer surrounds individual muscle fibers?

Accepted Answer

Endomysium

Question 8

A muscle contraction where the muscle length does not change, but tension increases, is called:

Accepted Answer

Isometric contraction

Question 9

Which of the following formulas correctly represents the calculation of bone density, given mass ($$m) $$and volume ($$V$$)?

Accepted Answer

$$	ext{Bone Density} = \frac{m}{V}$$

Question 10

During skeletal muscle contraction, what happens if there is no ATP available?

Accepted Answer

Myosin heads cannot detach from actin, resulting in rigor mortis

Question 11

Which muscle group is responsible for stabilizing the shoulder joint, and what are the names of its four muscles?

Accepted Answer

Rotator cuff; supraspinatus, infraspinatus, teres minor, subscapularis

Question 12

Which of the following best describes the function of acetylcholine (ACh) at the neuromuscular junction?

Accepted Answer

ACh binds to receptors on the muscle fiber, triggering depolarization and muscle contraction

Question 13

Which bone shape classification does the vertebra belong to, and what is its primary function?

Accepted Answer

Irregular bone; protection of the spinal cord and support

Question 14

If a patient has a fracture in the diaphysis of the femur, which region of the bone is affected and what is its main characteristic?

Accepted Answer

Shaft; contains the marrow cavity

Question 15

Which hormone is released from the thyroid gland and decreases blood calcium levels by inhibiting bone resorption?

Accepted Answer

Calcitonin

Question 16

Which of the following is a positive feedback process in bone physiology?

Accepted Answer

Mineralization during bone formation

Question 17

Which muscle is the deepest layer of the abdominal wall?

Accepted Answer

Transversus abdominis

Question 18

A patient with myasthenia gravis has antibodies against acetylcholine receptors. What is the primary effect on muscle function?

Accepted Answer

Reduced muscle excitability and weakness

Question 19

Which formula represents the calculation of force ($$F) $$generated by a muscle, given mass ($$m) $$and acceleration ($$a$$)?

Accepted Answer

$$F = m 	imes a$$

Question 20

Which type of muscle tissue is found in the walls of blood vessels, and what is its primary function?

Accepted Answer

Smooth muscle; regulates vessel diameter and blood flow

Study Guide: Bone Tissue, Skeletal System, Joints, Muscular System, and Muscle Tissue (Chapters 7–11)

Study Guide - Practice Questions

Study Guide - Flashcards