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The Human Body

What are the main parts of a human cell? Nucleus, cytoplasm and cell membrane.
Define nucleus. Controls everything that goes on inside the cell.
Define cytoplasm. All the parts of the cell are in a gel like substance called cytoplasm.
Define cell membrane. This is the cell wall that holds the cell together.
About how many cells is the human body made up of? About 100 trillion cells and not all are alike.
Each cell is what? Each cell is alive, taking in food and getting rid of wastes.
How many kinds of tissues does the human body haves? What are they? It was 4 kinds. Muscle tissue (muscles), nerve tissue (carry signals), epithelial tissue (skin, lungs, stomach lining) and connective tissue (join together to support parts of your part)
What do cells vary in? They vary in shape and size and carry out different jobs.
Since cells have a limited lifetime, what do they have to do? They have to be repaired or replaces when they wear out.
What do the same type of cell form in the body? They form body tissues such as skin or muscle.
What do red blood cells do? Carry oxygen and nutrients to other cells and carry wastes like carbon dioxide away.
What do nerve cells do? Pass messages to and from the brain.
What do white blood cells do? Help fight disease in the body.
What do muscle cells do? Contain fibres that contract to make you move.
what system is the heart in the circulatory system
what is the heart like a pump
what is a heart an organ
what does the left ventricle do to pump blood through aorta into the body
what does the right ventricle do to pump blood through the pulmonary artery to the lungs
what does the heart muscle do it squeezes blood during the heartbeat
what does the aorta do to carry oxygen-rich blood to all parts of the body
what does the pulmonary vein do to carry oxygen-rich blood from the lungs
what does the pulmonary artery do to carry oxygen-poor blood to the lungs
what does the upper vena cava (vein) do it carries oxygen-poor blood from the upper body to the heart
what does the lower vena cava (vein) to carry oxygen-poor from the lower body to the heart
what does the right atrium do it receives oxygen-poor blood from all the parts of the body
what does the left atrium do it receives oxygen-rich from the lungs
what do the valves do they keep blood flowing in the proper direction
Created by: chriskummer