The Human Body Systems

1. The Human Body Systems

2. Levels of Organization Remember that levels of organization in a multicellular organism include cells, tissues, organs, and organ systems. Tissues are groups of similar cells that perform a single function, such as connecting a muscle to a bone. An organ is a group of tissues that work together to perform a complex function, such as sight. An organ system is a group of organs that perform closely related functions.

3. Four Major Tissues Epithelial tissue- includes glands and tissues that cover interior and exterior body surfaces. Connective tissue- provides support for the body and connects its parts. Nervous tissue- transmits nerve impulses throughout the body. Muscle tissue- along with bones, enables the body to move; move substances thru the body

4. Four Major Tissues

5. Anatomical Planes This helps us to get a reference point and understand how we are looking at structures in a body. As we cut along a plane, we are left with two “halves” Label the diagrams accordingly.

6. Anatomical Planes- bipedal FRONTAL (or coronal) separates the body into dorsal and ventral parts MEDIAN (or midsagittal) separates body into right and left parts HORIZONTAL separates the body into superior and inferior parts SAGITTAL any plane parallel to the median plane superior Dorsal/ posterior Ventral/ anterior inferior

7. Anatomical Planes- quadrupedal FRONTAL (or coronal) separates the body into dorsal and ventral parts MEDIAN (or midsagittal) separates body into right and left parts HORIZONTAL separates the body into superior and inferior parts SAGITTAL any plane parallel to the median plane dorsal anterior posterior ventral

8. Anatomical Terms- highlight these