Organs and Organ Systems Levels of Cell Organization

Organs and Organ Systems Levels of Cell Organization

Organelles 1) ________ join together to form cells, and create life. Cells 2) ______ join together to form tissues. Tissues 3) ______ are groups of similar shaped cells that together carry out a common function. There are four main tissue types:

i) Epithelial tissue: This is a covering protective and ______ layer of cells. skin Includes _______ and stomach lining.

ii) Connective Tissue: support this tissue gives ____ to other tissues, as well as holding them together. ligaments Includes ______ blood and ______. Connective tissue has both fibrous proteins and a material found between it’s cells, called the matrix. This can be fluid, in the case of blood, or more solid, in the case of bone.

iii) Muscle Tissue: Rich in special contractile protein, this tissue enables movement _______ when stimulated. There are different types of muscle, some of which we consciously contract skeletal (_____ muscle) and other types that we don’t have to think about contracting (____ smooth muscle)

iv) Nerve Tissue: the essential task of this tissue is to provide ________. communication brain includes the _______, spinal chord _______, and nerve cells throughout the body.

4) Organs are groups of tissues different _____ joined together to carry out a ________ specific function Examples of organs are…

5) Organs Systems Organ systems are many organs that related have a ____ function.

6) Organism Organ systems join together to form a living organism. Organisms vary greatly in their complexity. Mammals (including humans) are most among the _____ complex.

Homeostasis: Maintaining a constant internal environment

Body Temperature: An Example of Homeostasis in action