1. Organs and Organ Systems
Levels of Cell Organization

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

3. Epithelial tissue: skin
This is a covering and ___________ layer of cells.
Includes _______ and stomach lining.
protective
skin

6. ii) Connective Tissue:
this tissue gives ________ to other tissues, as well as holding them together.
Includes ____________ 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.
support
ligaments
blood

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

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

12. 4) Organs
Organs are groups of different __________ joined together to carry out a ________________
Examples of organs are…
tissues
specific function

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

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

16. Homeostasis: Maintaining a constant internal environment

17. Body Temperature:
An Example of Homeostasis in action