$$\text{ATP} + \text{Creatine} \rightarrow \text{ADP} + \text{Creatine Phosphate}$$

$$\text{Glucose} + 2\text{ADP} + 2\text{P}_i \rightarrow 2\text{Pyruvate} + 2\text{ATP} + 2\text{H}_2\text{O}$$

Question 1

Which of the following best describes a synovial joint?

Accepted Answer

A joint surrounded by a two-layered capsule, containing synovial fluid, and allowing free movement.

Question 2

Which movement is demonstrated when you move your arm away from the midline of your body, such as when performing a jumping jack?

Accepted Answer

Abduction

Question 3

During muscle contraction, which of the following changes occur in the sarcomere?

Accepted Answer

The H band and I band both decrease in width, while the A band remains the same.

Question 4

Which equation correctly represents the transfer of energy from ATP to creatine in resting muscle?

Accepted Answer

$$	ext{ATP} + 	ext{Creatine} ightarrow 	ext{ADP} + 	ext{Creatine Phosphate}$$

Question 5

A patient presents with inflammation of the bursae in the shoulder. Which function is most likely impaired?

Accepted Answer

Reduction of friction between tendons and bones during movement.

Question 6

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

Accepted Answer

Troponin binds calcium ions, causing tropomyosin to shift and expose active sites on actin.

Question 7

Which of the following movements occurs at the ankle when standing on tiptoes?

Accepted Answer

Plantar flexion

Question 8

Which statement about muscle fiber types is correct?

Accepted Answer

Fast fibers are pale due to low myoglobin and are found in muscles requiring rapid, powerful contractions.

Question 9

Which of the following is a real-life example of an isometric contraction?

Accepted Answer

Standing still and holding a heavy box without moving your arms.

Question 10

Which equation represents glycolysis, the anaerobic breakdown of glucose?

Accepted Answer

$$	ext{Glucose} + 2	ext{ADP} + 2	ext{P}_i ightarrow 2	ext{Pyruvate} + 2	ext{ATP} + 2	ext{H}_2	ext{O}$$

Question 11

Which structure is responsible for storing and releasing calcium ions during muscle contraction?

Accepted Answer

Sarcoplasmic reticulum

Question 12

A muscle that assists the prime mover in performing an action is called:

Accepted Answer

Synergist

Question 13

Which of the following best describes the difference between tendons and ligaments?

Accepted Answer

Tendons connect muscle to bone, while ligaments connect bone to bone.

Question 14

Which of the following is true regarding the effect of joint structure on movement and strength?

Accepted Answer

Joints with a wider range of motion are generally weaker.

Question 15

Which muscle group is primarily responsible for flexing the knee during activities such as sitting down?

Accepted Answer

Hamstrings

Question 16

Which of the following best describes the process of recruitment in muscle contraction?

Accepted Answer

Activating additional motor units to increase muscle tension.

Question 17

Which neurotransmitter is released at the neuromuscular junction to initiate muscle contraction?

Accepted Answer

Acetylcholine

Question 18

Which of the following is a function of synovial fluid?

Accepted Answer

Reduces friction and nourishes articular cartilage.

Question 19

Which muscle arrangement allows for the greatest range of motion but the least force production?

Accepted Answer

Parallel

Question 20

Which of the following best describes the Cori cycle?

Accepted Answer

The recycling of lactate from muscle to liver, where it is converted to glucose.

Anatomy & Physiology Study Guide: Joints, Muscle Tissue, and the Muscle System

Study Guide - Practice Questions