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linea alba

band of tough connective tissue in the midline of the anterior abdominal wall serves as a muscle attachment

rectus abdominus

this muscle spans from the ribs and sternum to the pubic bones

transverse abdominus

froms the 3rd layer (deepest layer) of the abdominal wall muscles

external oblique

this muscle tenses the abdominal wall and compresses abdominal contents

rectus abdominus

this muscles tenses the abdominal wall and compresses abdominal contents and flexes vertebral column

errector spine group

the ilicostalis, longissimus, and spinalis muscles form this

biceps femoris

flexes leg at the knee

fibularis longus

plantar flexion and eversion of foot

fibularis tertius

dorsiflexion and eversion of foot

gluteus medius

abducts thigh and rotates it medially


adducts thigh

psoas major and iliacus

fllexes thigh at the hip

quadriceps femoris group

extends leg at the knee


abducts thigh and rotates it laterally

tibialis anterior

dorsiflexion and inversion of foot

tibialis posteriot

plantar flexion and inversion of foot


sheath of schwann cell containinf cytoplasm and nucleus that encloses myelin

nissl bodies

(chromatophilic substance), corresponds to rough endoplasmic reticulum in other cells


network of fine threads extending into nerve fiber

myelin sheath

substance of schwann cell composed of lipoprotein that insulates axons and increases impulse speed


neuron process with many branches that cinducts an impulse toward the cell


branch of an axon


star-shaped neuroglia between neurons and blood vessels


nerve fiber arising fom a slight elevation of the cell body that conducts an impulse away from the cell body


transmitts impulse from sensory to motor neuron within central nervous system

motor neuron

transmitts impulse out of the brain or spinal cord to effectors

sensory neuron

transmitts impulse into brain or spinal cord from receptors


myelin-forming neuroglia in brain and spinal cord


phagocytic neuroglia


structure capable of respinding to motor impulses


specialized mass of neuron cell bodies outisde the brain or spinal cord

ependymal cell

cells that cover the inside spaces of the brain ventricles and help regulate cerebrospinal fluid

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