bio 1102 lab 5 quiz

skeletal muscle

composed of cell, nuclei, striations

tendon

connective tissue composed of collagen fibers, nuclei of fibroblasts

compact bone

composed of haversian canal, lamellae

neuromuscular junction

composed of motor end plate

origin

area on a bone where a muscle is firmly attached; does not move during contraction

insertion

point of attachment to the bone and muscle

agonist

main muscle responsible for a specific movement

antagonist

muscle that opposes the agonist

flexion

contraction of biceps and triceps

extension

relaxation of biceps and triceps

depression

movement of the lower jaw downwards

elevation

movement of the lower jaw upwards

dorsiflexion

kicking of foot

plantar flexion

pointing toes down (which is an extension)

fast-twitch glycolytic fibers (FG)

white, large in diameter, generates energy for quick, powerful contractions

slow-twitch oxidative fibers (SO)

red, small in diameter, generate ATP without lactic acid

fast oxidative-glycolic fibers (FOG)

intermediate in size and energy abilities

tuna fish fiber type

FG

flounder fish fiber type

SO

swordfish fiber type

SO and FG

muscle fiber types analysis rule

the more mitochondria present in a muscle fiber, the darker it will appear

axial skeleton

composed of skull (frontal, occipital, mandible) and sacrum

appendicular skeleton

composed of pelvis and femur

sex is determined by

skull, femur, pelvis

height is determined by

femur oblique length

age at death is determined by

femur length

mandible

jaw bone

maxilla

upper jaw bone

zygomatic

cheek bones

temporal

temple bones

hyoid

neck bone

scapula

shoulder blades

humerus

upper arm bone

ulna and radius

forearm bones

phalanges

finger & toe bones

femur

upper leg bone

tibia

lower leg bone

calcaneous

heel bone

metatarsal

mid-foot bones

phalanges

toe bones

tibialis anterior

foot lift

gastrocnemius

foot press

biceps brachii / brachialis

forearm flexion

triceps brachii

forearm extension

orbicularis oculi

winking your eye

digastric

depressing jaw

temporalis / masseter

elevate jaw