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189 terms

Muscular System Lab

STUDY
PLAY
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
Platysma
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
deltoid
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
sartorius
sartorius
semitendinosis
tensor fasciae latae
tensor fasciae latae
1 tibialis anterior
2 fibularis longus
3 soleus
triceps
vastus lateralis
1 vastus lateralis
3 gastrocnemius
1 and 3 only (2 is hard to see)
iliopsoas iliacus - psoas major
left to right
Rectus femoris

Extends knee and flexes thigh at hip
Name the muscle and function
Sartorius

Flexes and laterally rotates thigh, flexes knee
Name the muscle and function
Transversus Abdominis

Compresses anterior abdominal contents
Name the muscle and function
External Intercostals

Helps with inhalation
Name the muscle and function
Internal Intercostals

Helps with exhalation
Name the muscle and function
Pectoralis major

Primary muscle of arm flexion; adducts and medially rotates arm; with arm fixed, pulls chest forward
Name the muscle and function
Rectus abdominis

Compresses anterior abdominal wall; flexes trunk
Name the muscle and function
Adductor longus

Adducts, flexes, and laterally rotates thigh
Name the muscle and function
Biceps femoris

Long head: extends hip and flexes knee
Short head: flexes knee
Name the muscle and function
Internal abdominal oblique

Compresses anterior abdominal wall; flexes trunk; rotates trunk; depresses lower ribs
Name the muscle and function
External abdominal oblique

Compresses anterior abdominal wall; flexes trunk; rotates trunk; depresses lower ribs
Name the muscle and function
Latissimus dorsi

Extends, adducts, and medially rotates arm
Name the muscle and function
External abdominal oblique

Compresses anterior abdominal wall; flexes trunk; rotates trunk; depresses lower ribs
Name the muscle and function
Trapezius

Elevates, retracts, depresses, or rotates scapula upward; elevates clavicle; extends neck
Name the muscle and function
Sternocleidomastoid

Simultaneous contraction of both heads; flexes neck forward.
Individual action of each head: rotates head to shoulder on opposite side
Name the muscle and function
Gluteus maximus

Extends and laterally rotates hip
Name the muscle and function
Gluteus medius

Abducts and medially rotates hip
Name the muscle and function
Gastrocnemius

Flexes knee and plantar flexes foot
Name the muscle and function
Masseter

Elevates mandible and closes jaw
Name the muscle and function
Frontalis

Wrinkles skin of forehead, elevates eyebrows; draws scalp anteriorly
Name the muscle and function
Temporalis

Elevates and retracts mandible
Name the muscle and function
Occipitalis
Identify what the arrow is pointing to
Orbicularis Oris

Closes, protrudes, and purses lips (kissing muscle)
Name the muscle and function
Orbicularis Oculi

Depresses upper eyelid, elevates lower eyelid; tightens skin around eyes
Name the muscle and function
Zygomaticus

Retracts and elevates corner of mouth
Name the muscle and function
Deltoid

Flexes, extends, abducts; medial and laterally rotates arm
Name the muscle and function
Biceps brachii

Flexes and supinates forearm
Name the muscle and function
Triceps brachii

Extends forearm
Name the muscle and function
Brachialis

Flexes forearm
Name the muscle and function
Flexor carpi radialis

Flexes wrist and abducts hand
Name the muscle and function
Extensor carpi radialis longus

Extends wrist and abducts hand
Name the muscle and function
Tibialis Anterior

Dorsiflexes and inverts foot
Name the muscle and function
Fibularis Longus

Plantar flexes and everts foot
Name the muscle and function
Depressor Anguli Oris

Depresses corner of mouth
Name the muscle and function
Calcaneal Tendon

Connects calf muscles to the heel and helps walking/weight bearing excercise

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