what is the function of the integumentary system?
serves as a barrier against infection and injury
what compoments make up the integumentary system?
nose, hair, skin,
what are the skins 2 layers and what are thier purposes?
epidermis and dermis. you epidermis is always showing the dermis is under your epidermis and is alive contains: blood vessels, nerves, sweat glanads, and hair follicles. the epidermis: constantly making new cells and serves as protection
why do we need hair and nails?
hiar:serve as a uv protection barrier for us and warmth
nails: protect tips of toes and fungers.
what is the function of the imune system?
protect your body from the outside world.
what is the first line of defense?
the skin: very few pathogens can get through the skin.
what is the inflammatory response?
2nd line of defense. reaction of injury cause by injury or infection-blood vessels swell and allows white blood cells to come to the site to attack the invader
what is an antibody? what does it do?
fights pathogens in the body and the lymph. they are blind to antigens and mark the pathogen for destruction.
what are killer-t cells?
attack and destroy serious/larger pathogens. such as cancer
what is a vaccination, and how does it work?
a weakened or killed form of the pathogen-it produces immunity to it/ makes antibodies that remember the pathogen.
what is the function of the skeletal system?
keep your structure, makes blood cells, provides structural support, protects oragans
what are bones?
solid network of living cells/ contains blood vessels and cells
what is bone marrow?
soft tissue within the bone, yellow marrow-made of fat
red marrow-produces red blood cells, white blood cells, and platelets
what are joints? give some examples.
a place where one bone attaches to another bone.immovable skull/ slightly moveable/ freely moveable.
what are ligamenets?
hold bones together in a joint. ex. Acl in the knee.
what is the function of the muscular system?
allows you to move
what are the three types of muscle tissue , and where is each found?
skeletal-attached to the bone/cardiaca-heart muscle/smooth-found in organs
what is a sarcomere?
functional unit of a muscle
what are tendons? what do they do?
how skeletal muscles are joined to the bone/pull on the bone to work it like a lever.
what is the function of the endocrine system?
controls your emotions and your homromes
what other body sytems does the endocrine system use to "send" its products?
circulatory system, travel through the blood
what are hormones?
chemical messages that get sent through the blood stream to cause a change in the body.
what is the pituitary gland? where is is located?
in the base of teh skull boss of the rest of the endocrine system.
the hypothalamus is part of the brain, how does it relate to the endocrine system?
part of the brain that controls the pituitary gland.
what is the thyroid gland? where is it located?
sits ontop of of the larynx. controls your metabolism.
what are adrenal glands? where are they located?
your adrenaline, sit onop of your kidneys
what is the "fight or flight" response?
the determine if you would leave or stay and fight
what is the role of the pancreas?
the release insulin. insulin remakes you blood sugar.
what are the two reproductive glands?
ovaries and testies