Science 8 - Cells, Tissues, and Organs - 2.3 to 4.3

textbook pages 31-69

diffusion

the movement of particles from an area of higher conncentraiton ot an area of lower concentration

osmosis

the diffusion of a soulution (water) through a selctivley permeable membrane

cells

the basic units of life

tissuses

a group of similar cells which come together to perform a specific function or task

organs

a group of tissues which work together to preform a specific task

organ systems

a group of organs which work together to perform a task or function within the body

specialized cells

cells within the body which are suited to perform a specific function

connective tissue

tissue which provides support and connects different parts of the body

nervous tissue

tissue that carries messages to and from the brain and the rest of the body

epithelial tissue

tissue which covers the outside of the body and the linings of organs

muscle tissue

tissue that allows the body to contract using contraction

interdependant

depend or rely on one another

system

parts that work together to perform a function

circulatory system (function)

to transport oxygen, food, and other substances throughout the body and to remove waste from the body (mostly carbon dioxide)

respiratory system (function)

to transport oxygen from the air into the blood, and to remove carbon dioxide from the body

immune system (function)

to protect the body from diseases and other foreign objects/pathogens trying to enter the body

nervous system (function)

to recognize and coordinate the body's response to changes in its internal and external environments

excretory system (function)

to remove waste and toxins from the body

muscular system (function)

to provide movement for your body

skeletal systems (function)

to provide support for your muscles, and to protect your body

peripheral nervous system

contains all nerves and neurons outside of your brain and spinal cord, and carries messages…

central nervous system

contains the brain and the spinal cord, and acts as the command centre for your body.

alveoli

tiny sacs of lung tissue where oxygen and carbon dioxide are exchanged between the lungs and blood.

veins

carry blood back to the heart

arteries

carry blood away from the heart

cappilaries

connect veins and arteries

red blood cells

carries oxygen and carbon dioxide throughout the body

circulatory system (components)

heart, blood, arteries, veins, capillaries, lungs

respiratory system (components)

mouth, nose, trachea, bronchi, lungs

digestive system (components)

mouth, esophagus, stomach, liver, intestines

nervous system (components)

brain, spinal cord, nerves, neurons, sensory organs (eyes, ears, nose)

excetory system (components)

kidney, bladder, lungs, skin

immune system (components)

Bone marrow, lymph nodes/vessels, thymus, spleen, white blood cells

muscular system (components)

skeletal muscles, smooth muscles, cardiac muscles, tendons

skeletal system (components)

bones, muscles, cartilage, connective tissue

how are things transported in and out of a cell

difusion

a group of specilized cells form ____

tissues

organ systems within our body (list a minimum of 5)

nervous system, circulatory system, respiratory system, excretory system, immune system, skeletal system, muscular system

what is the purpose of blood

transport oxygen and nutrients to body cells and to carry away carbon dioxide