Muscles of the torso

Question 1

Location and function of the Pectoralis

Answer 1

Covers the chest, draws the arm and shoulder in towards the chest.

Question 2

Location and function of Intercostals

Answer 2

In between the ribs and running obliquely downwards Muscle of respiration, used to increase the thoracic cavity when breathing normally.

Question 3

Location and function of rectus abdominus

Answer 3

Extends the whole length of the front of the abdomen and is divided into 4 sections. Flexes the trunk forwards, extending the spine and maintains the posture of the body.

Question 4

Location and function of external obliques

Answer 4

Extends laterally from the sides of the abdomen. Flexes the trunk. and when acting alone it twists the trunk.

Question 5

Location and function of diaphragm

Answer 5

Mid chest separating the thoracic and abdominal cavities. Muscle of respiration, flattens to increase the thoracic cavity when breathing in causing the ribs to rise.

Question 6

Location and function of trapezius.

Answer 6

A large kite shaped muscle that covers the back and sides of the neck shoulders and upper back. Elevates and depresses the shoulders also draws the head backwards.

Question 7

Location and function of Latissimus dorsi

Answer 7

Large muscle which extends from the thoracic and lumbar vertebrae. Helps pull the body upwards when climbing, draws shoulders/ arm down and backwards.

Question 8

Location and function of erector spinae

Answer 8

Extends the spine and holds the body upright.