Q: A muscle contraction requires ATP. Which of the following equations best represents the hydrolysis of ATP during muscle contraction?

$$\mathrm{ATP} + \mathrm{H}_2\mathrm{O} \rightarrow \mathrm{ADP} + \mathrm{P}_i + \text{energy}$$

Question 1

Which of the following best describes the primary function of the integumentary system?

Accepted Answer

Protection against environmental hazards

Question 2

A patient presents with a burn that destroys both the epidermis and the entire dermis. Which of the following best describes the type of burn and its likely consequences?

Accepted Answer

Third-degree burn; loss of sensation due to nerve destruction

Question 3

Which tissue type is primarily responsible for voluntary movement in the human body?

Accepted Answer

Skeletal muscle tissue

Question 4

A histology slide shows cells with striations and multiple peripheral nuclei. Which tissue is most likely being observed?

Accepted Answer

Skeletal muscle tissue

Question 5

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

Accepted Answer

$$D = \frac{m}{V}$$

Question 6

A patient is unable to flex their elbow after a traumatic injury. Which joint and muscle group are most likely affected?

Accepted Answer

Elbow joint and biceps brachii

Question 7

Which of the following best describes the role of the neuron’s myelin sheath?

Accepted Answer

It increases the speed of action potential conduction

Question 8

During a lab, you observe a tissue sample with cells arranged in layers and a free surface exposed to the environment. Which tissue type are you most likely viewing?

Accepted Answer

Epithelial tissue

Question 9

Which of the following best explains why cartilage heals more slowly than bone after injury?

Accepted Answer

Cartilage lacks a direct blood supply

Question 10

A student is examining a synovial joint. Which of the following features should they expect to find?

Accepted Answer

A joint cavity filled with synovial fluid

Question 11

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

Accepted Answer

It stores and releases calcium ions during muscle contraction

Question 12

A patient with osteoporosis has a decrease in bone mass. Which of the following equations best represents the relationship between bone mass ($$m$$), bone volume ($$V$$), and bone density ($$D$$)?

Accepted Answer

$$D = \frac{m}{V}$$

Question 13

Which of the following is a correct sequence of events in the transmission of a nerve impulse across a synapse?

Accepted Answer

Action potential arrival → Calcium influx → Neurotransmitter release

Question 14

Which of the following best explains why skeletal muscle fibers appear striated under the microscope?

Accepted Answer

Alternating arrangement of actin and myosin filaments

Question 15

A patient is diagnosed with a herniated intervertebral disc. Which tissue type is primarily involved in this condition?

Accepted Answer

Fibrocartilage

Question 16

Which of the following best describes the anatomical organization of the nervous system?

Accepted Answer

Central nervous system and peripheral nervous system

Question 17

A muscle contraction requires ATP. Which of the following equations best represents the hydrolysis of ATP during muscle contraction?

Accepted Answer

$$\mathrm{ATP} + \mathrm{H}_2\mathrm{O} ightarrow \mathrm{ADP} + \mathrm{P}_i + 	ext{energy}$$

Question 18

Which of the following best explains why the skin is considered an organ?

Accepted Answer

It is composed of multiple tissue types working together

Question 19

A patient is unable to extend their knee after an injury. Which muscle group is most likely affected?

Accepted Answer

Quadriceps femoris

Question 20

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

Accepted Answer

They break down bone matrix

BI 231Z Anatomy & Physiology I: Course Schedule and Study Guide

Guida di studio - Domande di pratica

Study guide - Flashcard