Muscles Of The Trunk Anterior

Question 1

What is the action of the Platysma?

Answer 1

Wrinkles skin of the neck

Question 2

What muscle wrinkles the skin of the neck?

Answer 2

Platysma

Question 3

Where is the Platysma found?

Answer 3

Front of neck

Question 4

What is the action of the Trapezius?

Answer 4

Rotates inferior angle of scapula laterally, raises shoulder, draws scapula backwards

Question 5

What muscle rotates the scapula laterally, raises shoulder, and draws scapula backwards?

Answer 5

Trapezius

Question 6

Where might you find the Trapezius?

Answer 6

Upper back, kite-shaped muscle.

Question 7

What is the action of the Deltoid?

Answer 7

Draws arm forward, middle abducts, draws arm backwards

Question 8

Where might you find the Deltoid?

Answer 8

Shoulder

Question 9

What muscle draws arm forward, backwards, and abducts?

Answer 9

Deltoid

Question 10

What is the action of the External Obliques?

Answer 10

Flexes vertebral column, rotates body at the waist

Question 11

What muscle flexes the vertebral column and rotates the body at the waist?

Answer 11

External Obliques

Question 12

Where might you find the External Obliques?

Answer 12

Waist

Question 13

Where might you find the Internal Obliques?

Answer 13

Waist, deep to external oblique

Question 14

What is the action of the Internal Obliques?

Answer 14

Rotates waist and flexes vertebral column

Question 15

What muscle produces rotation at the wrist and flexes vertebral column?

Answer 15

Internal Oblique

Question 16

What is the action of the Sternocleidomastoid?

Answer 16

Flexes head and turns it side to side

Question 17

Where might you find the Sternocleidomastoid?

Answer 17

Side of neck, rope-like muscle

Question 18

What muscle flexes the head and turns it side to side?

Answer 18

Sternocleidomastoid

Question 19

What is the action of the Pectoralis Major?

Answer 19

Draws arm forwards and medially; adducts and rotates inwards

Question 20

What muscle draws arm forwards and medially; adducts and rotates inwards?

Answer 20

Pectoralis Major

Question 21

Where might you find the Pectoralis Major?

Answer 21

Chest

Question 22

Where might you find the Serratus Anterior?

Answer 22

Side of thorax

Question 23

What muscle draws shoulder forward and rotates scapula?

Answer 23

Serratus Anterior

Question 24

What is the action of the Serratus Anterior?

Answer 24

Draws shoulder forwards, rotates scapula

Question 25

What is the action of the Rectus Abdominis?

Answer 25

Supports viscera (large internal organs), flexes vertebral column

Question 26

What muscle supports viscera and flexes the vertebral column?

Answer 26

Rectus Abdominis

Question 27

Where might you find the Rectus Abdominis?

Answer 27

Abdominal wall

Question 28

Where might you find the Transverse Abdominis?

Answer 28

Underneath internal and external obliques deepest muscle of the abdomen

Question 29

What is the action of the Transverse Abdominis?

Answer 29

Supports viscera and flexes vertebral column

Question 30

What muscle supports viscera and flexes vertebral column?

Answer 30

Transverse Abdominis

Question 31

What is the action of the Ilio-Psoas?

Answer 31

Rotates femur laterally and flexes hip

Question 32

What muscle rotates femur laterally and flexes the hip?

Answer 32

Ilio-Psoas

Question 33

Where is the Ilio-Psoas found?

Answer 33

Deep muscle of pelvic floor which crosses hip joint