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Cells, Tissues, Organs, and Organ Systems

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by

Michael Ho

on 15 May 2013

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Transcript of Cells, Tissues, Organs, and Organ Systems

Cells, Tissues, Organs, and Organ Systems Vocab Cell Structures Tissues, Organs, and Organ Systems Working Together The Purpose of
Major Organ Systems
1) endocytosis- the process by which a cell membrane surrounds a particle in a vesicle in order to bring the particle into the cell
2) chromosome- (in a eukaryotic cell) a structure within the nucleus that are made up of DNA and protein
3) mitosis- the cell division that forms two new nuclei (each has same number of chromosomes) Animal/Human cells have many organelles that serve different functions in the cell. These organelles are comprised of the nucleus, endoplasmic reticulum, ribosomes, golgi complex, mitochondria, lysosome, and central vacuole. As you may already know, masses of tissue make up organs, organs makes up organ systems, and organ systems make up organisms. These organ systems help maintain our body's homeostasis and also help our cell's need for oxygen, food, and waste removal. The main systems that come to mind when helping out the cells with these problems are the circulatory, respiratory, digestive, and excretory systems. Cells make up tissues Tissues make
up organs Organs make up
organ systems Cell Parts 1) cell membrane-a phospholipid layer that covers a cell's surface
2) nucleus- contains the cell's DNA
3) cytoplasm- a gel-like fluid in a cell
4) mitochondria- the site of cellular respiration Important Words 1) cells- the smallest unit of all living organisms
2) tissues- organizational level of the body between cells and a developed organ
3) organs- a mass of cells and tissue that perform a spcific function in the body
4) organ systems- a group of organs that work together
5) organisms- a living system Cell Processes Organ Systems 1) skeletal- supports, protects, and allows the body to move
2) muscular- function is movement and flexibility
3) integumentary- forms a protective covering on the outside of the body
4) nervous- made of nerve cells and fibers and send nerve impulses throughout the body
5) respiratory- function is to take in oxygen and expel carbon dioxide
6) circulatory- circulates blood and lymph throughout the body
7) lymphatic- function is to collect extracellular fluid and return it to the blood
8) digestive- function is to break down food so that it can be used by the body
9) excretory- function is to remove excess, unnecessary, or harmful materials from the body
10) immune- function is to recognize and attack foreign substances in the body Cells Cells must take in nutrients in order to grow and divide. One way that cells take in nutrients is by using endocytosis. The cell traps a particle in a vesicle, and brings it into the cell. The cells must have the needed nutrients in order to perform mitosis. Mitosis allows the cells to divide and duplicate in order to make a lot of cells. Many cells make up tissues, many tissues make up organs, and many organs make up organ systems. A basic diagram of the process of mitosis A simple diagram of endocytosis Organelle Functions Nucleus Name Function Contains the cell's DNA and is the control center of the cell Endoplasmic Reticulum Makes lipids, breaks down substances, and delivers proteins to the golgi complex Ribosomes Golgi Complex Where amino acids are hooked together to make proteins Packages and distributes proteins and other materials out of the cell Mitochondria Breaks down food molecules
to make ATP Lysosome Digests food particles, wastes,
cell parts, and foreign invaders Central Vacuole Stores water and other materials Circulatory + Respiratory = Oxygen and nutrient-rich cells! Digestive + Excretory = Waste-free and healthy cells! Our organ systems play a huge role in our bodies. From the urine we excrete to the sweat that we expel, our organ systems take care of our many needs. Each and every system relies on one another to work properly and to function. Without our organs, we would be dead from all of the waste and we would be comprised of basically nothing. The main purpose of our body's organ systems is to maintain homeostasis- the body's stable internal environment (balance). The skeletal system The muscular system The integumentary
System Some of the body's organ systems Thanks for watching! Organ systems make up organisms Michael Ho
4th Block Montgomery
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