Respiratory system
what is respiratory system ?
takes oxygen into the body we inhale, and release carbon dioxide when we exhale
functions of muscular system
supports body ,produces movement , maintenance of fluids , generate heat
digestion
the mechanical and chemical breakdown of food into small particles and molecules that your body can absorb and use .
explain the process of fertilization
when a sperm enters an egg
what Is ventricles
lower Chambers of heart that pump blood out of the heart
respiratory system parts
nose , trachea , larynx , bronchi , lungs , alveoli , diaphragm
define elasticity
ability of a material to bounce back to original shape after being disturbed
mechanical breakdown
where food is physically broken into smaller pieces
function of fallopian tubes
tubes which carry eggs from the ovaries to the uterus and which provides the place where fertilization occurs
what does pulmonary artery carries
deoxgynated blood from heart to lungs
how long can body cells go without oxygen before cells begin to die ?
four minutes
where is cardiac muscle found
heart
explain esophagus
a muscular tube that connects the mouth to the stomach
physical changes during puberty
body growth , hair , hips , menstrual cycle
function of white blood cells
destroy disease causing - microorganisms
what's sinuses
hollow spaces in skull
define excitiability
ability of muscle to respond to a stimulus
what's villi
fingerlike projections covering the folds of small intestine
social changes during puberty
freinds , environment
liquid substance in blood
plasma
what is the difference between left and right bronchus
right bronchus is wider , shorter , and straighter then left
identify quadriceps
a muscle group consisting of four muscles that straighten the leg knee joint and raises high
explain ingestion
taking in food
what's ovulation
process in which egg is released from the ovary
difference between vein and artery
vein carries blood to the heart , Artery carries tot he heart