$$Torque = Force \\times Lever\\ Arm$$

Question 1

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

Accepted Answer

They break down bone tissue by releasing acids and enzymes.

Question 2

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

Accepted Answer

The shaft of the bone composed mainly of compact bone.

Question 3

Which hormone increases blood calcium levels by stimulating osteoclast activity?

Accepted Answer

Parathyroid hormone (PTH)

Question 4

A synovial joint that allows movement in only one plane, such as the elbow, is classified as which type?

Accepted Answer

Hinge joint

Question 5

Which vertebral region contains vertebrae with transverse foramina and bifid spinous processes?

Accepted Answer

Cervical

Question 6

During muscle contraction, which of the following correctly describes the sliding filament mechanism?

Accepted Answer

Myosin heads bind to actin and pull the thin filaments toward the M line.

Question 7

A patient is unable to abduct their arm at the shoulder. Which muscle is most likely injured?

Accepted Answer

Deltoid

Question 8

Which of the following best describes the role of the sarcoplasmic reticulum in skeletal muscle contraction?

Accepted Answer

It stores and releases calcium ions necessary for muscle contraction.

Question 9

Which of the following is a correct pairing of digestive enzyme and its function?

Accepted Answer

Lipase – breaks down triglycerides into fatty acids and glycerol

Question 10

A patient has a blockage in the common bile duct. Which of the following digestive processes would be most directly affected?

Accepted Answer

Emulsification and digestion of dietary fats

Question 11

Which layer of the digestive tract is responsible for peristalsis and segmentation?

Accepted Answer

Muscularis externa

Question 12

A person with a herniated lumbar disc is most likely to experience symptoms affecting which part of the body?

Accepted Answer

Lower back and lower limbs

Question 13

Which of the following best describes the action of an antagonist muscle during movement?

Accepted Answer

It opposes the action of the agonist.

Question 14

A patient is diagnosed with osteoporosis. Which of the following best explains the underlying mechanism?

Accepted Answer

Decreased bone mass due to increased bone resorption

Question 15

Which of the following equations correctly represents the relationship between force, lever arm, and torque in a lever system?

Accepted Answer

$$Torque = Force \times Lever\ Arm$$

Question 16

Which of the following is a characteristic unique to synovial joints?

Accepted Answer

Presence of a joint cavity filled with synovial fluid

Question 17

A patient is unable to flex their forearm at the elbow. Which muscle is most likely affected?

Accepted Answer

Biceps brachii

Question 18

Which of the following best describes the function of the submucosa in the digestive tract?

Accepted Answer

Contains blood vessels, nerves, and lymphatics to support the mucosa

Question 19

Which of the following is the correct order of layers from the lumen outward in the digestive tract?

Accepted Answer

Mucosa, submucosa, muscularis externa, serosa

Question 20

A patient with damage to the facial bones is most likely to have an injury to which of the following?

Accepted Answer

Maxilla

Anatomy & Physiology Exam Study Guide: Bones, Joints, Muscles, and Digestive System

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