Lab Practical 2

action: raises eyebrows

occipitofrontalis

action: closes eye

orbicularis oculi

action: purses lips

orbicularis oris

action: tenses skin on neck

platysma

origin: zygomatic arch

insertion: lateral surface of mandibular ramus

action: closes jaw

masseter

origin: along temporal lines of skull

insertion: coronoid process of mandible

action: elevates mandible

temporalis

origin: occipital bone

insertion: clavicle

action: extend neck

trapezius

origin: clavicular head attached to sternal end of clavicle

insertion: mastoid region of skull

action: flex the neck

sternocleidomastoid

origin: superior surface around pubis symphysis

insertion: xiphoid process

action: depresses ribs

rectus abdominus

action: compresses abdomen

transverse abdominus

action: bends spine

external oblique

action: compresses abdomen

internal oblique

action: contraction expands thoracic cavity

diaphragm

origin: body of sternum

insertion: crest of greater tubercle

action: medial rotation of shoulder

pectoralis major

origin: clavicle

insertion: deltoid tuberosity of humerus

action: abduction at shoulder

deltoid

origin: lumbar vertebrae

insertion: groove of humerus

action: medial rotation at shoulder

latissimus dorsi

action: medial rotation at shoulder

teres major

origin: coracoid process

insertion: radial tuberosity

action: flexion at elbow

biceps brachii

action: flexion at elbow

brachialis

action: flexion at elbow

brachioradialis

origin: superior lateral margin of humerus

insertion: olecranon of ulna

action: extension at elbow

triceps brachii

action: lateral rotation at hip

gluteus maximus

action: flexion at hip

iliopsoas

action: flexion at hip

sartorius

action: flexion at knee

gracilis

origin: rib of ilium

insertion: tibial tuberosity

action: extension at knee

vastus medialis

origin: greater trochanter of femur

insertion: tibial tuberosity

action: extension at knee

vastus intermedius

origin: length of linea aspera of femur

insertion: tibial tuberosity

action: extension at knee

vastus lateralis

action: flexion at knee

biceps femoris

action: flexion at knee

semitendinosus

action: flexion at knee

semimembranosus

origin: lateral condyle of tibia

insertion: base of first metatarsal bone

action: flexion at ankle

tibialis anterior

origin: femoral condyles

insertion: calcaneus

action: extension at ankle

gastrocnemius

action: extension at ankle

soleus

muscle fascicle

single muscle cell

muscle fiber

surrounds entire muscle

epimysium

surrounding a fascicle

perimysium

surrounding each muscle fiber

endomysium

endoplasmic reticulum of a muscle cell

sarcoplasmic reticulum

extension of cell membrane that penetrates through the muscle cell

T-tubule

thin filaments in muscle fibrils that attach to myosin heads

Actin

thick filaments that have club-like heads

myosin

skeletal muscle tissue

voluntary

striated

long, cylindrical, multinucleate cells

attached to bone

cardiac muscle tissue

involuntary

striated

short, wide cells

only in heart

smooth muscle tissue

involuntary

not striated

squamate cell structure

located in viscera

occipitofrontalis

orbicularis oculi

orbicularis oris

platysma

masseter

temporalis

trapezius

sternocleidomastoid

rectus abdominus

transverse abdominus

external oblique

internal oblique

diaphragm

pectoralis major

deltoid

latissimus dorsi

teres major

biceps brachii

brachialis

brachioradialis

triceps brachii

gluteus maximus

iliopsoas

sartorius

gracilis

rectus femoris

vastus medialis

vastus lateralis

vastus intermedius

biceps femoris

What is the top line pointing to?

semitendinosus

what is the middle line pointing to?

semimembranosus

what is the bottom line pointing to?

tibialis anterior

gastrocnemius

soleus

iliotibial tract

calcaneal tendon

soma of neuron

nucleus of neuron

axon of neuron

dendrites of neuron

cerebrum

frontal lobe

parietal lobe

temporal lobe

occipital lobe

insula

cerebellum

diencephalon

thalamus

hypothalamus

pituitary gland

brainstem

mesencephalon

what is A pointing to?