A&P 1.03 Flashcards
rectus Femoris
straight/femur - runs straight up along the front of the thigh
only head that does not attach to the femur
quadriceps femoris
4 sided on the thigh
comprised of 4 separate muscles that converge on a single insertion and form the “quadriceps group”
generally refered to as a single group and one muscle
rectus femoris
O,I,A
named for the direction of it’s fibers and it’s location
O: AIIS (anterior inferior illiac spine)
I: Tibial tuberosity
A: hip flexion & knee extension
vastus medialis
huge/medial - large muscle on medial thigh
vastus intermedius
large muscle in between vastus lateralis and vastus medialis
deep to rectus femoris on anterior thigh
vastus lateralis
large muscle on lateral thigh
Extracellular Fluids
Fluids outside the cells
2 major categories: interstitial & Plasma
can include lymph, CSF, synovial, etc
Interstitial Fluid
In the spaces between the cells
Plasma
liquid fluid part of the blood
Lymph
Fluid part of lymphatic system
Intercellular Fluids
within the cells
Tissue
groups of cells
cephalic
Head
Cranial
Skull
caudal
tail; toward the buttocks
ipsilateral
same side
contralateral
opposite side
Bilateral
two sides
Unilateral
one side
sagittal plane
vertival plane fromfront to back that divides a body or an organ into right and left sides
midsagittal
equal halves
parasagittal
sagittal but unequal halves
flexation
decrease in angle between articulating joints in a sagittal plane
extension
increase in angle between articulating joints in a sagittal plane
axial skeleton
skull, spine, ribs, sternum, hyoid & auditory ossicles
appendicular skeleton
limbs and girdles
girdles
pectoral (shoulder): scapula, clavical
pelvic (hip): Illium, pubis, ischium
muscular system
structure
skeletal muscle, smooth muscle (organs) & cardiac muscles (heart)
individual and voluntary
Muscular system
functions
movement, stabilization, temperature
Muscular system - movement
body movements, organ movements, heart movments, smiling, etc
Muscular system - stabilization
body position, posture
Muscular system - temperature
generates from movement
parts of the muscle
belly, attachments, origin & insertion
Belly
middle of the muscle, usually thicker portion
attachments
the ends of the muscle, fibrous CT- tendons (ropes) , aponeurosis (flat sheets)
Origin
proximal, stable, inferior, medial
insertion
distal, moves, superior, lateral
How muscles are named (7)
direction, size, shape, action, number of origins, location and attachments
What plane does flexion and extension usually happen in?
Sagittal
