Lab Exercise 16 Part 1 Gross Anatomy of the Muscular System Facial, Trunk and Back Muscles.

Lab Exercise 16 Part 1Gross Anatomy of the Muscular System

Facial, Trunk and Back Muscles

When studying the muscle models

• Learn the NAME and LOCATION of the muscle on the model.

• Learn the ACTION of the muscle (what action it produces when the muscle contracts)

A note on muscle actions…

• On the lab exam, you only need to provide ONE action.

• The action MUST have an ACTION word and the BONE/BODY part being acted upon.– Example: Acceptable – FLEX ARM

Unacceptable - FLEX

Facial Expression Muscles

•Epicranius – frontal belly

•Orbicularis oculi

•Orbicularis oris

Facial Expression Muscles

Epicranius - occipital belly

Zygomaticus

Risorius

Mastication & Neck Muscles

•Masseter

•Sternocleidomastoid

Mastication & Neck Muscles

Masseter

Sternocleidomastoid

Torso Muscles – Study on the following 2 models

Shows SUPERFICIAL muscles only!!!

Shows SUPERFICIAL muscles on RIGHT and DEEP muscle on LEFT!!!

TORSO MUSCLES – SUPERFICIAL ONLY!!!

Deltoid

Pectoralis major

Serratus Anterior

TORSO MUSCLES – SUPERFICIAL ONLY!!!

Rectus abdominis

External oblique

TORSO MUSCLES – SUPERFICIAL & DEEP!!!

External intercostals

Internal intercostals

TORSO MUSCLES – SUPERFICIAL & DEEP!!!

Deltoid

Pectoralis major

Pectoralis minor

Serratus anterior

TORSO MUSCLES – SUPERFICIAL & DEEP!!!

Rectus abdominis

External oblique

Internal oblique

BACK MUSCLES – SUPERFICIAL ONLY!!!

Deltoid

Trapezius

Latissimus dorsi

BACK MUSCLES – SUPERFICIAL ONLY!!!

Infraspinatus

Teres Minor

Teres Major

BACK MUSCLES – SUPERFICIAL ONLY!!!

Teres Minor

Teres Major

Infraspinatus

BACK MUSCLES – SUPERFICIAL & DEEP!!!

Supraspinatus

Infraspinatus

Teres Minor

Teres Major

BACK MUSCLES – SUPERFICIAL & DEEP!!!

Deltoid

Trapezius

Latissimus dorsi

BACK MUSCLES – SUPERFICIAL & DEEP!!!

Infraspinatus

Teres Minor

Teres Major

BACK MUSCLES – SUPERFICIAL & DEEP!!!

Rhomboid Minor

Rhomboid Major