Question 1

Which of the following muscles is a common site for intramuscular (IM) injections in adults, and why is it preferred?

Accepted Answer

Deltoid; because it is easily accessible and has fewer major nerves and blood vessels nearby

Question 2

A patient presents with heel pain that worsens after running. Examination reveals tenderness at the bottom of the foot near the heel. Which structure is most likely inflamed?

Accepted Answer

Plantar fascia

Question 3

Which muscle is primarily responsible for flexing the forearm at the elbow joint?

Accepted Answer

Brachialis

Question 4

A woman experiences urinary leakage when sneezing or coughing after childbirth. Which muscle group is most likely weakened, leading to this condition?

Accepted Answer

Levator ani muscles

Question 5

Which of the following best describes the main benefit of intramuscular injections compared to subcutaneous injections?

Accepted Answer

They allow for faster absorption due to greater vascularity in muscle tissue

Question 6

Which muscle is located in the ventral thorax and is responsible for adducting the arm?

Accepted Answer

Pectoralis major

Question 7

A patient is prescribed Kegel exercises to treat urinary stress incontinence. What is the physiological effect of these exercises?

Accepted Answer

Strengthening and relaxing the pelvic floor muscles

Question 8

Which muscle is NOT part of the quadriceps femoris group?

Accepted Answer

Biceps femoris

Question 9

Which of the following is a recommended initial treatment for plantar fasciitis?

Accepted Answer

Stretching exercises and ice application

Question 10

Which muscle is responsible for the primary movement of the diaphragm during inspiration?

Accepted Answer

Diaphragm

Question 11

A nurse is preparing to give an IM injection in the lateral thigh of a child. Which muscle is the safest and most appropriate site?

Accepted Answer

Vastus lateralis

Question 12

Which of the following muscles is located in the neck and is responsible for rotating and flexing the head?

Accepted Answer

Sternocleidomastoid

Question 13

Which muscle is primarily involved in plantar flexion of the foot?

Accepted Answer

Gastrocnemius

Question 14

Which of the following best explains why IM injections are not given in the gluteus maximus in infants?

Accepted Answer

The muscle is too small and underdeveloped

Question 15

Which muscle is responsible for abduction of the arm at the shoulder joint?

Accepted Answer

Deltoid

Question 16

A patient with plantar fasciitis is advised to use shoe inserts. What is the primary purpose of this intervention?

Accepted Answer

To reduce tension and provide support to the plantar fascia

Question 17

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

Accepted Answer

$$F = m 	imes a$$

Question 18

Which muscle is located in the dorsal leg and is involved in knee flexion?

Accepted Answer

Biceps femoris

Question 19

Which of the following is NOT a function of the external oblique muscle?

Accepted Answer

Extending the arm

Question 20

A patient is unable to dorsiflex the foot. Which muscle is most likely impaired?

Accepted Answer

Tibialis anterior

Muscular System – Part 2: Muscle Locations, IM Injections, Plantar Fasciitis, and Urinary Stress Incontinence

Study Guide - Practice Questions

Study Guide - Flashcards