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Human Body Systems
A review of all the Systems.
93
Science
7th Grade
05/28/2009

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Cards

Term
What are the 3 types of muscle?
Definition
cardiac,smooth.skeletal
Term
What is a tendon?
Definition
connects muscle to bone
Term
What are the 3 layers of skin?
Definition
epidermis,dermis and fatty layer
Term
What is found in the dermis?
Definition
oil glands,sweat glands,nerves,blood vessels,muscle
Term
What is melanin?
Definition
It is the pigment found in the skin.
Term
What are the 5 functions of the skin?
Definition

protection

vitamin D formation

get rid of waste

regulate temperature

receives sensations

Term
What does vitamin D do?
Definition
absorbs calcium from the food we eat
Term
What are 6 nutrients?
Definition

minerals

protein

carbohydrates

fats

water

vitamins

Term
Name 2 types of digestion.
Definition

Chemical-uses enzymes to break down food

Mechanical-Uses teeth and muscle movement to mix up food

Term

What is an enzyme

 

Definition
a chemical which speeds up a reaction
Term

What are organs of digestion?

 

Definition

mouth

esophagus

stomach

small intestine

large intestine

 

Term

What are the wavy muscular movements found in the digestive system?

 

Definition
peristalsis
Term
What does mucus do for the stomach?
Definition
It coats it so acid doesn't eat through its walls
Term
What is digested food called?
Definition
Chyme
Term
How long is digestion?
Definition
2-4 hours
Term
What are the fingerlike structures in the small intestine called?
Definition
villi
Term
What do the villi do?
Definition
They absorb nutrients into the blood stream.
Term
What are feces?
Definition
solid waste
Term
What are the 6 functions of the circulatory system?
Definition
transports food,oxygen,carbon dioxide,wastes,chemicals and fights disease
Term
What is the pathway of blood ?
Definition
Body-heart-lungs-heart-body-heart-lungs----------
Term
What are the 3 systems of circulatio?
Definition

coronarey-heart to heart

pulmonary-heart to lungs to heart

systemic-heart to all major body structures

Term
How many liters of blood circulates through body?
Definition
5
Term
Where is the heart located?
Definition
Behind the sternum,tipped to the left and the size of a fist
Term
What are the 4 chambers of the heart?
Definition

Right atria-receives impure blood from body

Right ventricle-pumps impure blood to lungs.

Left atria-receive pur blood from the lungs

Left Ventricle-pumps pur blood to the body

Term
What separates the heart into 2 sides?
Definition
Septum
Term
What protein carries oxygen through the body?
Definition
hemoglobin
Term
What is the importance of valves
Definition
prevent backflow of blood
Term
What is the pacemaker
Definition
contorls the rhyrhm of the heart
Term
What are the 3vessels that carry blood?
Definition

artery-away from heart

vein-toward heart

capillary-connector of 2

Term
What is the largest artery and vein?
Definition
Aorta-artery  Vena cava-vein
Term
What is the liquid part of blood?
Definition
plasma
Term
What are the solid parts of blood?
Definition

Red-carries oxygen

white-fights disease

platelets-clotting

Term
What are 4 blood types?
Definition
A,B,AB,O
Term
What is the Lymphatic System?
Definition
it is a way our body fights disease.
Term
what is a lymph node
Definition
a structure in the body which filters bacteria in the lymph system
Term
What is  arteriosclerosis?
Definition
hardening of the arteries.
Term
What is a stroke?
Definition
when there is an absence of oxygen to the brain due to a clot.
Term
what is a heart attack?
Definition
when the supply of blood is cut off to the heart itself due to a clot.
Term
what is blood pressure
Definition
It is when the blood is pushed into the arteries as the ventricle pumps.
Term
what is systole
Definition
the pressure when the heart's left ventricle pumps
Term
what is diastole
Definition
pressure registered when left ventricle relaxes and is filling with blood.
Term
What is a sphygmomanonmeter
Definition
it is a piece of equipment which registers blood pressure.
Term
What are the 6 functions of the circulatory system
Definition
transpot oxygen,carbon dioxide,food waste,chemicals and fight disease
Term
What is the pathway of blood through the body
Definition
heart-lungs-heart-body
Term
what are the 3 types of circulation
Definition

coronary-heart to heart

pulmonary-heart to lung to heart

systemic-heart to all parts of the body

Term
How many liters of blood flows through body
Definition
5
Term
where is the heart located
Definition
to the left under the sternum and is the size of a fist
Term
what is the pacemaker
Definition
controls rhthym of the heart
Term
What are the 4 chambers of the heart and their function
Definition

right atria-collects impure blood from body

right ventricle-pumps blood to the lungs

left atria-receives pure blood from the lungs

left ventricle-pumps blood to all parts of body

Term
what is the septum
Definition
the thin muscular layer between the right and left sides of the heart
Term
what is the blood protein that carries oxygen
Definition
hemoglobin
Term
What is the function of the valves in the heart
Definition
they prevent backflow
Term
What are the 3 transport tubes and their function
Definition

artery-thick walled,carries blood away from heart

vein-thin walled with valves,carries blood to heart

capillaries-small interconnecting vessels

Term
what is the largest artery and vein
Definition

aorta-artery

vena cava-largest vein

Term
plasma
Definition
the liquid part of the blood
Term
RBC
Definition
red blood cell-doughnut shape,no nucleus,carries hemoglobin and oxygen
Term
WBC
Definition
white  blood cell-large nucleated,fights disease
Term
platelet
Definition
bits of broken cells,clots blood
Term
Lymphatic System
Definition
filters bacteria/foreign matter
Term
4 blood types
Definition
A
O
AB
B
Term
universal donor
Definition
O
Term
universal receiver
Definition
AB
Term
What is a neuron
Definition
a nerve cell
Term
What is a dendrite
Definition
receives impulses
Term
what is a axon
Definition
carries impulse away from nerve cell to muscle,etc.
Term
what is a synapse
Definition
the area between 2 nerve cells
Term
What are the 3 types of neurons
Definition
sensory,interneuron,motor
Term
what are the 2 main divisions of the nervous system
Definition
central and peripheral
Term
what makes up the central nervous system
Definition
brain/spinal cord
Term
what makes up the peripheral system
Definition
all the nerves leaving the CNS
Term
what are the 3 parts of the brain and their function
Definition

cerebrum-thinking

cerebellum-controls voluntary actions

brainstem-controls involuntary actions

Term
what is the somatic nervous system
Definition
controls voluntary actions
Term
what is autonomic system
Definition
controls involuntary actions
Term
what is a reflex
Definition
involuntary action that sends impulse directly to spinal cord and back to muscle-happens in a split second
Term
what are the sense organs
Definition
taste/smell/sight/touch/hearing
Term
what are the parts of the eye and their function
Definition

lens/cornea-refract light

iris-controls light entry

pupil-opening to eye

retina-sees color/light

optic nerve-sends impuse to brain

Term
what are the 3 parts of the ear
Definition

outer-ear canal/eardrum

middle ear-stirrup,anvil,hammer

inner ear-cochlea,semicircular canals,auditory nerve

Term
What causes us to hear sound
Definition
vibrations picked up by the ear
Term
what helps us to maintain balance
Definition
semicircular canals
Term
what governs the sense of smell
Definition
olfactory nerve
Term
what governs taste
Definition
taste buds
Term
how do we determine smell
Definition
olfactory cells
Term
what is the difference between respiration and breathing
Definition
respiration-inhaling  oxygen and exhaling carbon dioxide
Term
what is the nostril
Definition
entrance for air-warms,moistens,filters
Term
what is the trachea
Definition
the major breathing tube
Term
what is the bronchus and bronchioles
Definition
smaller breathing tubes
Term
what is the larynx
Definition
voice box-vocal cords attached for sound
Term
What are alveoli
Definition
air sacs
Term
what 2 structures allow you to breathe
Definition
diaphragm/chest muscles
Term
What is the function of the kidney
Definition
filters liquid waste
Term
What filters blood
Definition
the liver
Term
what stores liquid waste
Definition
urinary bladder
Term
what is urine
Definition
liquid waste
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