Muscular System Lab

Created by lavilyn 

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Agonist

prime mover; plays major role in accomplishing movement

Antagonist

a muscle working in opposition to agonist

Synergists

muscles that work together to cause a movement

Tendons

attach muscles to bones

Aponeurosis

a very broad tendon

Frontalis

raise eyebrows, wrinkle forehead

Orbicularis Oculi

close eye (wink, blink; causes crows feet)

Orbicularis Oris

close mouth, purse lips

Buccinator

compress, flatten cheeks (whistling, blowing, sucking)

Zygomaticus: Major and Minor

draw corners of mouth up, angle (smiling)

Platysma

tense the skin of the neck, lower the mandible

A: EPICRANIAL APONEUROSIS
B: TEMPORALIS
C: ORBICULARIS OCULI
D: ZYGOMATICUS
E: ORBICULAR ORIS
F: BUCCINATOR
G: PLATYSMA
H: EPICRANIUS: FRONTALIS
I: EPICRAINUS: OCCIPITALIS
J: MASSETER
K: STERNOCLEIDOMASTOID

Masseter

Jaw closer

Sternocleidomastoid

flex and rotate the neck

Splenius

together: flex the neck; separate: laterally flex neck to the same side

Back and Neck Muscles
A: Trapezius
B: Deltoid
C: Latissiums dorsi
D: Levator scapulae
E: Rhomboid
F: Scapula

Trapezius

varies, elevates, rotates scapula

Pectoralis Minor

Depress shoulder, pulls scapula forward/downward, raises ribs

Serratus Anterior

Rotates the scapula up

Diaphragm

most important muscle in respiration

External intercostals

more superficial layer that lifts the rib cage and increases thoracic volume to allow inspiration

Internal intercostals

deeper layer that draws ribs down

RECTUS ABDOMINUS

FLEXES VERTEBRAL COLUMN

EXTERNAL ABDOMINAL OBLIQUE

Flexes vertebral column and compress abdominal walls

TRANSVERSE ABDOMINIS

A: DEEPEST MUSCLE OF ABDOMINAL WALL

Compress abdominal contents

Pectoralis Major

prime mover of Flexion of the arm

LATISSIMUS DORSI

prime mover of arm extension, adduction, medial rotation, brings arm down

DELTOID

prime mover or arm abduction

SHOULDER JOINT MUSCLES (ROTATOR CUFF)
A: Subscapularis
B: Supraspinatis
C: Infraspinatis
D: Teres minor

INFRASPINATUS

Rotates humerus laterally

SUPRASPINATUS

ABDUCTS ARM

Biceps Brachii

flexes the elbow and suprination of the forearm

BRACHIALIS

A- Elbow flexion

Elbow flexion

Brachioradialis

Flexing forearm

Triceps Brachii

Forearm extensor

Flexor carpi radialis

wrist flexion and adduction

Palmaris Longus

Tenses skin of palm during hand movement

Flexor Digitorum

flexes fingers

GLUTEUS MAXIMUS

hip extension

A: Gluteus Medius
B: GLUTEUS Minimus

abduction, medial rotation thight

Rectus femoris
QUADRICEPS

Flex the hip and extend the knee

A: VASTUS LATERALIS
B: VASTUS MEDIALIS
C: VASTUS INTERMEDIUS

Extends the knee

B:SARTORIUS; LATERAL ROTATION

Flexes, abducts and rotates the thigh

A: PECTINEUS
B: GRACILIS
C: ADDUCTOR BREVIS
D: ADDUCTOR LONGUS
E: ADDUCTOR MAGNUS
F: ADDUCTORS

They all adducts and flexes the thigh

A: ADDUCTOR LONGUS;

A: Pectineus;
B: ADDUCTOR BREVIS
C: Gracilis;

A: TENSOR FASCIAE LATAE
B: SARTORIUS
C: PSOAS MINOR
D: ILIACUS
E: PSOAS MAJOR
F: PSOAS (ILIOPSOAS)
G: PECTINEUS
H: ADDUCTOR LONGUS
I: GRACILIS
J: ADDUCTOR MAGNUS
K: RECTUS FEMORIS
L: VASTUS INTERMEDIUS (DEEP TO RECTUS FEMORIS, NOT VISIBLE)
M: VASTUS MEDIALIS
N: VASTUS LATERALIS
O: QUADRICEPS FEMORIS

NAMES AND WHAT VIEW IS THIS?

A: Biceps Femoris; A-hip extension, knee flexion

NAME AND ACTION

A: Semimembranosus
B: Semitendinosus
A- hip extension, knee flexion, medial rotation

NAMES AND ACTION

A: HAMSTRINGS
B: SEMITENDINOSUS
C: BICEPS FEMORIS
D: SEMIMEMBRANOSUS
POSTERIOR VIEW

NAMES; WHAT VIEW IS THIS?

Intrinsic foot muscles

flex or extend and abduct or adduct the toes

A:Tibialis Anterior
A- ankle dorsiflexion, inversion

NAME AND ACTION

A: Extensor Digitorum Longus
A- extension of toes

NAME AND ACTION

A: Peroneus (Fibularis) Longus
A- plantarflexion, eversion

NAME AND ACTION

A: Gastrocnemius
A- plantarflexion, eversion
B: ACHILLES TENDON

NAME AND ACTION

A: Soleus
A- plantarflexion

NAME AND ACTION

A: ANTERIOR VIEW
B: LATERAL VIEW
C: SOLEUS
D: FIBULARIS LONGUS
E: TIBIALIS ANTERIOR
F: EXTENSOR DIGITORUM LONGUS
G: ANTERIOR COMPARTMENT MUSLCES
H: GASTROCNEMIUS
I: SOLEUS
J: PERONEUS (FIBULARIS) LONGUS
K: TIBIALIS ANTERIOR
L: EXTENSOR DIGITORUM LONGUS
M: ANTERIOR COMPARTMENT MUSCLES

A: GASTROCNEMIUS
B: SOLEUS
C: ACHILLES TENDON (CALCANEAL TENDON)
D: CUT GASTROCNEMIUS HEADS
E: SOLEUS
F: CUT GASTROCNEMIUS TENDON
G: ACHILLES TENDON (CALCANEAL TENDON)
H: FLEXOR DIGITORUM LONGUS
I: DEEP POSTERIOR COMPARTMENT MUSCLES

Occipitalis on top of the Occipitali bone.

Temporalis

Orbicularis oculi = circular muscle oculi = eye

Orbicularis oris

Zygomatic major: over the zygomatic bone old name = zygomaticus, as seen on blue chart

Risorius: aka laugher muscle. NOTE: not a real smile until muscle (Z. ma.) above helps out.

Depressor anguli oris: name describes location/action. old name (triangularis, as seen on blue chart) describes shape

Buccinator: the trumpeter muscle, bucc- = cheek, under your cheeks

Mentalis: ment- = chin, from lip to chin

Masseter: masti- = to chew, from mandible to zygo. arch

Temporalis: over the temporal bone. Note: it's deep under the auricularis.

Stylohyoid: from styloid process to hyoid bone. NOTE: use neck area of Torso man

Styloglossus: from styloid process to tongue NOTE: use neck area of Torso man

Sternocleidomastoid: break it up into pieces (sterno = sternum, cleido = clavicle, & mastoid = mastoid process, "There You Go") You've got all the connections - contract & you've got functions.

Semispinalis capitis: deep muscle spine to head. essentially covered by trapezius so look deep on blue chart (right side).

Splenius capitis: also deep, but splenius (bandage-shaped) essentially covered by trapezius so look deep on blue chart (right side).

Trapezius: kite-shaped muscle. posterior views

Latissimus dorsi: laterally across the back

Pectoralis major: big on pectoral region anterior views

Serratus anterior: edge of serrated knife

Coracobrachialis: deep view, from the coracoid to arm

Deltoid: over the shoulder

Teres major: bigger muscle teres = long & round

Teres minor: teres = long & round minor: smaller muscle

Biceps brachii: your "biceps" - can't miss.

Brachialis: under the biceps.

Triceps brachii

Pronator teres: in front other side of elbow (anterior view)

Anconeus: ancon- = elbow, (posterior view)

Brachioradialis: on thumb side (arm to radius)

Flexor carpi radialis

Palmaris longus

Flexor carpi ulnaris

Extensor carpi radialis longus

Extensor digitorum communis

Extensor carpi ulnaris

External intercostals

internal intercostals:

Pectoralis minor: small, under major

External & internal obliques: abdominal muscles running at an angle.

External & internal obliques: abdominal muscles running at an angle.

Transversus abdominis: again, as the direction implies.

Rectus abdominis: rectus = straight or parallel to the midline Deep under the abdominal aponeurosis

Tensor Fasciate latae

Iliacus: up through pelvis onto iliac crest. Same function & both are best seen on Thin Man or Torso man

Adductor longus*: medial to pectineus.

Adductor magnus: back side & under gracilis.

Gracilis: long slender muscle, inside of leg.

Sartorius: like a tailor (who would sit cross-legged at work). As such, this slender muscle, longest in the body, wraps around the thigh from ASIS to tibia

Rectus femoris: rectus = straight or parallel, femoris = of the femur

Vastus medialis: medial to Rectus femoris

Vastus lateralis: lateral to R. fem.

Hamstrings - three (3) muscles in back of thigh are: Biceps femoris: most lateral.

Hamstrings - three (3) muscles in back of thigh are: Semitendinosus: next to Biceps femoris

Hamstrings - three (3) muscles in back of thigh are: Semimembranosus: closest to the middle.

Gastrocnemius: "calf muscle" posterior view

Soleus: under Gastrocnemius

Tibialis anterior: lies in front of the tibia. anterior view

biceps femoris

1 semimembranosis
2 semitendinosis
3 biceps femoris

1 semitendinosis
2 biceps femoris

1 semimembranosis
2 semitendinosis
3 biceps femoris

purple gluteus maximus, minimus
blue hamstring group
yellow gastrocnemius

posterior view only
purple (two), blue (group), yellow

biceps brachii

brachioradialis

red vastus lateralis
blue rectus femoris
green vastus medialis
tan sartorius
brown gracilis

red blue green tan brown name in that order

extensor digitorum

extensor digitorum

extensor carpi radialis longus and brevis

1 fibularis longus
2 tibialis anterior
3 extensor digitorum longus

extensor carpi ulnaris/
extensor digiti minimi/
extensor digitorum

left to right three muscles

1 brachioradialus
2 flexor carpi radialus
3 palmaris longus
4 flexor carpi ulnarus

gastrocnemius

don't worry about 1 and 2, just the muscle name

1 gastrocnemius
2 soleus

gluteus maximus

gluteus medius

gluteus medius

1 gluteus maximus
2 tensor fasciae latae
3 vastus lateralis

sartorius

just # 2

iliotibial tract

extensors

forearm. Are these flexors or extensors?

quadriceps femoris

name of the group

1 vastus lateralis
2 rectus femoris
3 vastus medialis

rectus femoris

semitendinosis

tensor fasciae latae

tensor fasciae latae

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