skeletal system Flashcards
What are bones mostly made out of at birth?
Cartilage
What replaces the cartilage when growing bones?
Bone tissue
What is at the end of long bones?
Ephiysis
Soft spot on back of baby’s head is ?
fontanels
What is it called where the and skull bones meet?
Sutures
What is the axial system
Upper body bones
appendicular system
lower body bones
cells called __________ form new bones continuously.
osteoblasts
how do broken bones heal
blood clots close, white blood cells clean, cartilage fills gap, compact bone replaces cartilage
What is the outer layer of bone called?
periosteum
What’s under the periosteum
compact bone
Whats in the center of bone?
spongey bone
What color is bone marrow
Yellow and red
What is yellow marrow
its the inside of bone that holds fat
what is red bone marrow
creates blood cells
what are joints
where two bones meet
what are ligaments
tissue holding bones together
tendons
connect muscles to bones
how can joints not scrape
synovial fluid
Do all joints move?
No
semi movable joints
only small movement like the vertebrates in spine
hinge joint
knees and elbows, going back and forth
joints that don’t move
fixed joint
ball and socket joint
most flexible, hips and shoulders
pivot joint
rotating arms by elbows
principal of overload
pushing your body more than usual
principal of progression
getting better
principal of specificity
type of excecise you do
fitt
frequency,intensity,time,type
physical activity pyramid
diagram of fitness
factors influncing physical fitness
heredity,maturation,environment, physical activity, age
how much a day of activity
60
one of main reasons for teen obesity
too much screen time
Dangers of sedentary
disease,obesity, death
benifits of mod phys act
mh,fatigue,grades,sick,weight,sleep
mod phys act fit
daily,brisk walk, 60 min
cardiorespiratory endurance
excersise whole body for long time without stopping
benifets of good cardio endurance
weight, strong heart, brain power
how to measure benefits of cardio excercise
fitness assessment,timed mile run,step test
heart rate
best way to measure intensity of workout
vigorous aerobic activity
activity intense enough to get heart rate to target zone
Target zone for me
124-165
vig phys act fit
3x,60-80% or max heart rate, 20 minutes
