05/26/2023 Notes

Question 1

Muscles of the pectoral girdle originate and insert where?

Answer 1

Pectoral girdle muscles originate on the axial skeleton and insert on the clavicle and scapula

Question 2

What do muscles of the pectoral girdle do for the scapula?

Answer 2

Helps to stabilize the scapula and move it to increase the arm’s angle of movement

Question 3

What anterior muscles are found in the thorax?

Answer 3

Pectoralis Minor and Serratus Anterior

Question 4

What muscle is the prime mover in scapular protraction?

Answer 4

Serratus Anterior

Question 5

What posterior muscles are found in the thorax?

Answer 5

Rhomboid Major, Rhomboid Minor, and Trapezius

Question 6

What muscles are antagonistic to the serratus anterior and pectoralis minor?

Answer 6

Rhomboid Major and Minor

Question 7

What muscles that move the glenohumeral joint are originate on the axial skeleton?

Answer 7

Latissimus Dorse and Pectoralis Major

Question 8

What is a prime arm mover muscle and often referred to as the “swimmer’s muscle”?

Answer 8

Latissimus Dorsi

Question 9

What muscles that move the arm originate on the scapula?

Answer 9

Deltoid, coracobrachialis, teres major, and rotator cuff muscles (supraspinatus, infraspinatus, subscapularis, teres minor)

Question 10

What muscle is a prime abductor of the shoulder and is a good location for intramuscular injections?

Answer 10

Deltoid

Question 11

Flexing the elbow joint means the same thing as flexing the…?

Answer 11

Flexing the forearm

Question 12

Fasciae separates muscles into _____ that contain associated nerves and blood vessels.

Answer 12

Compartments

Question 13

Anterior compartment muscles of the arm are primarily elbow _____?

Answer 13

Elbow flexors

Question 14

Posterior compartment muscles of the arm are primarily elbow _____?

Answer 14

Elbow extensors

Question 15

What muscle with two heads is found in the anterior compartment of the arm?

Answer 15

Biceps Brachii

Question 16

What muscle is the prime extensor of the elbow joint? What muscle is it antagonistic to?

Answer 16

Triceps Brachii located in the posterior compartment of the arm; it is antagonistic to the anterior compartment

Question 17

Since there are no muscles in the fingers, how are they moved?

Answer 17

Flexors and extensors located in the forearm/palm move the digits

Question 18

The anterior compartment muscles of the forearm do what to the wrist, metacarpal joints, and interphalangeal joints?

Answer 18

Anterior compartment muscles flexes them

Question 19

What compartment muscles of the forearm extends the wrist, metacarpal joints, and interphalangeal joints?

Answer 19

Posterior compartment

Question 20

What does the retinacula do in the forearm?

Answer 20

Holds tendon close to the bone to prevent “bowstringing” of the tendons

Question 21

Where are the most powerful and largest muscles of the body located?

Answer 21

Within the lower limb

Question 22

What is the fascia lata?

Answer 22

Deep fascia that encircles the thigh muscles like a stocking and tightly binds them

Question 23

What are the four compartments in the thigh?

Answer 23

Posterior, anterior, medial, lateral

Question 24

What functions do the anterior compartment muscles of the thigh do?

Answer 24

Extends the knee and flexes the thigh

Question 25

What functions do the lateral compartment muscles of the thigh do?

Answer 25

Abducts the thigh

Question 26

What functions do the posterior compartment muscles of the thigh do?

Answer 26

Flexes the knee and extends the thigh

Question 27

What functions do the medial compartment muscles of the thigh do?

Answer 27

Adducts the thigh

Question 28

Most of the muscles that act on the thigh originate where?

Answer 28

On the os coxae

Question 29

Muscles in the thigh help to stabilize what joint? What other functions do they have?

Answer 29

Stabilize acetabulofemoral joint, support the body during standing and walking

Question 30

What is the longest muscle of the body?

Answer 30

Sartoris

Question 31

What muscle attaches to the iliotibial tract (IT band)?

Answer 31

Tensor Fasciae Latae

Question 32

What is the largest and heaviest gluteal muscle that is also a chief extensor of the thigh?

Answer 32

Gluteus Maximus

Question 33

What muscle can put pressure on the sciatic nerve?

Answer 33

Piriformis