Heath body system

Body system

A group of organs that work together to perform a main body function

How is the human body organized

Hierarchy, sales make up tissues tissues make up organs in these form body systems

How many different body systems are there in the human body

11

Nervous system

Carries messages to and from the brain spinal cord and body

immune system

Removes harmful organisms from blood in combat's pathogens

respiratory system

Provides body cells with oxygen and removes carbon dioxide

skeletal system

Framework that protects vital organs and produces blood cells, works with muscles

Muscular system

Provides motion and maintains body posture

Endocrine system

Glands that produce and secrete hormones

Digestive system

Breaks down food into nutrients for the body

Integumentary system

Consist of skin and glands that cover and protect the body

Urinary system

Removes liquid waist and maintains water balance

plasma

liquid component in blood, carrie's blood cells , contains red and white , makes up liquid base composed of roughly 95% water

red blood cells

Transports oxygen to all body cells, contains the protein molecule called hemoglobin

white blood cells

Attack surround and destroy pathogens to prevent infection, primary defense against disease

how many major types of blood vessels are there

3

how many chambers are there in the heart

4, 2 upper=aria, 2 lower= ventricles

Arteries

Carrie Blood away from the heart on the left side of the body, the coronary supplies oxygen directly to heart tissue, pulmonary carries blood to lungs where it absorbs oxygen

veins

Return blood to the Heart on the right side of the body

Capillaries

Connect arteries and veins

what are the two major divisions of the nervous system

central and peripheral

what does the central nervous system consist of

spinal cord and brain

what does the peripheral nervous system do

sensory signals (taste, sight, smell) travel from the sense organs to the brain via the peripheral system

brain

the mass of nerve tissue that acts as the control center of the body (creates ideas and controls thinking, reasoning, and movements)

what is the job of the cerebrum

Controls the ability to memorize, think, and learn

What is the job of the cerebellum

Controls and coordinates muscle activity

What is the job of the brain stem

Controls the functions of the internal organs

What is the job of the spinal cord

Column of nerve cells that extend downward from the brain, carries messages to and from the brain

Neuron

The basic structural and functional unit of the nervous system

What are the three parts of a neuron

Cell body, Dendrites, axon

Cell body

The main mass and Central region of the nerve cell

Dendrites

Branching fibers that receive impulses and carry them toward the cell body

Axon

Carries outgoing impulses away from the cell body to the dendrites

what are the two types of neurons

Sensory and motor

Sensory neuron

Carries impulse from Sense organs to Central system, target destination spinal cord and brain

Motor neuron

Carries response impulses from brain and spinal cord to muscles and glands

what is a reflex action and why does it occur without conscious thought

, an involuntary action in which a message is sent to the spinal cord, interpreted, and is responded to immediately, fight or flight, brain’s impulses

3 neurological disorders

parkinson’s disease, multiple sclerosis, ALS

3 everyday habits that can help protect nervous system from injury

wear helmet for sports, avoid diving in shallow water, wear a seatbelt

immunity

the body's resistance to disease-causing agents

lymph

a clear liquid that surrounds body cells and circulates through lymph vessels

what happens when there is an invading pathogen

white blood cells attack it and it is filtered into other lymph which transports it directly to the lymph nodes

lymph nodes

filters and destroys pathogens (brought there by lymphs)

spleen

left side of abdomen, filters foreign matter from the blood and lymph

thymus gland

white blood cells are changed to t cells in this

lymph vessels

what pathogens travel through to get to the lymph nodes

what are t cells

white blood cells whos primary purpose is to destroy pathogens

b cells

specialized white blood cells responsible for producing antibodies

antibodies

special protein that help the immune system fight off infections

4 immune disorders

type 1 diabetes, rheumatoid arthritis, lupus, asthma

what are the 4 lifestyle habits necessary

nutrition (foods high in protein and vitamin B), prevention (maintain accurate and up to date record of immunizations), rest (get plenty of sleep), physical activity (exercise regularly to keep bones dense and protect bone marrow)