Question 1

Which of the following best describes the function of the extracellular matrix (ECM) in connective tissue?

Accepted Answer

It provides structural support and mediates biochemical interactions between cells.

Question 2

A patient presents with a deficiency in osteoclast activity. Which of the following would most likely result from this condition?

Accepted Answer

Abnormally dense bones due to reduced bone remodeling.

Question 3

Which of the following equations correctly represents the relationship between force, mass, and acceleration as applied to muscle contraction?

Accepted Answer

$F = m 	imes a$

Question 4

Which type of cartilage is most resistant to compression and is found in intervertebral discs?

Accepted Answer

Fibrocartilage

Question 5

A burn patient loses the epidermis and part of the dermis. Which type of burn is this classified as?

Accepted Answer

Second-degree burn

Question 6

Which of the following best describes the role of acetylcholine at the neuromuscular junction?

Accepted Answer

It binds to receptors on the muscle cell membrane, initiating an action potential.

Question 7

Which of the following is a function of the skeletal system?

Accepted Answer

Storage of calcium and phosphate ions

Question 8

Which connective tissue cell type is primarily responsible for producing collagen fibers?

Accepted Answer

Fibroblast

Question 9

Which of the following best explains why articular cartilage heals poorly after injury?

Accepted Answer

It lacks a perichondrium and has limited blood supply.

Question 10

During endochondral ossification, which of the following occurs first?

Accepted Answer

Development of a cartilage model

Question 11

Which of the following best describes the arrangement of collagen fibers in dense regular connective tissue?

Accepted Answer

Parallel fibers providing tensile strength in one direction

Question 12

A patient with a mutation affecting the production of keratin would most likely experience which of the following symptoms?

Accepted Answer

Weak and easily damaged skin

Question 13

Which of the following is a characteristic of cardiac muscle tissue?

Accepted Answer

Striated cells with intercalated discs

Question 14

Which of the following best describes the sliding filament theory of muscle contraction?

Accepted Answer

Myosin heads pull actin filaments toward the center of the sarcomere, causing muscle shortening.

Question 15

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

Accepted Answer

Hematoma formation, fibrocartilaginous callus formation, bony callus formation, bone remodeling

Question 16

Which of the following glands is responsible for producing a watery secretion that helps regulate body temperature?

Accepted Answer

Eccrine sweat gland

Question 17

Which of the following best describes the function of the sarcoplasmic reticulum in muscle cells?

Accepted Answer

It stores and releases calcium ions necessary for muscle contraction.

Question 18

Which of the following is a function of the integumentary system?

Accepted Answer

Protection against mechanical injury and pathogens

Question 19

Which of the following best explains why dense irregular connective tissue is found in the dermis of the skin?

Accepted Answer

It provides strength and flexibility in multiple directions.

Question 20

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

Accepted Answer

They synthesize new bone matrix and promote mineralization.

Anatomy & Physiology I: Exam 1 Study Guide

Study Guide - Practice Questions