cardiovascular system
how many veins/blood vessels are in a human heart?
there are 6 main blood vessels in a human heart
What is the diaphragm and how does it help us breathe?
The diaphragm is a dome-shaped muscle located at the base of the lungs. When you inhale, it contracts and flattens, expanding the chest cavity and drawing air into the lungs. When you exhale, the diaphragm relaxes, pushing air out of the lungs.
how long are your intestines if you were to stretch them out.
it would fit wall to wall across a room.
how many muscles does the human body have?
more than 600.
how many bones are in a full grown adult?
206
what is the largest artery in the heart?
the aorta
How does the respiratory system protect against dust and germs?
The respiratory tract is lined with mucus, which traps incoming dust, bacteria, and other foreign particles. Tiny, hair-like structures called cilia continually sweep this trapped debris away from the lungs and toward the throat to be swallowed or coughed out.
what is the main job of the digestive system?
to break down food and absorb nutrients.
what is a voluntary muscle?
a voluntary muscle is a muscle that you have to move.
why do babys have more bones for adults?
baby's have 300 bones that fuse as they grow.
true or false: heart cancer is rare?
True
what is the medical name for our windpipe?
the trachea
what wave-like muscle movement pushes food along?
peristalsis.
what is an involuntary muscle?
a muscle that moves on its own. like your heart beating!
what is the smallest bone in your body?
the bone inside your ear.
What is considered a normal resting heart rate (bpm)?
60 to 80 beats per minute in a average healthy adult.
is the left lung and the right lung the same size?
no the left lung is smaller to make room for your heart.
what tube connects the mouth to the stomach?
the esophagus
what connects muscles to bones?
tendons.
whats a joint?
a place where two or more bones meet
What is the name of the condition where your heart beats irregularly or too quickly/slowly?
arrhythmia
true or false? lungs are the only organs that can float on water.
true!
where does the most digestion happen?
the small intestine.
can muscles push?
no they only pull bones when they stretch.
what is calcium?
calcium is a protein that strengthens our bones.