Health Science 20 -Body Systems

The Body Systems You Chose: The Immune (lymphatic) System The Nervous System The Musculo-Skeletal System

The Body: Anatomy and Physiology Before we can begin into the immune system we need to look at an overview of the body itself. https://www.youtube.com/watch?v=8fG5Pxr9ZQ0 https://www.youtube.com/watch?v=uBGl2BujkPQ

Body Organization: directional terms, regions, sections, planes, and cavities

Anatomical Position The picture shows a body in anatomical position. The person is upright, with arms down and palms to the front.

Anatomical Position All directional terms reference position with regards to anatomical position … even if the body in question is in a different position. Example: The head is superior (above) to the feet, whether you are standing up, laying down, or doing a handstand.

Directional Terms (draw this) Terms are used to describe relative position. Example: the ribs are anterior to the spine

Directional Term Practice Name a structure that is … … medial to your eye … lateral to your heart …. distal to your wrist … proximal to your elbow … on the posterior side of the hand …on the anterior side of the body … superficial to the ribs

Regional Terms The body can be divided into two main regions: Axial part – the main axis of our body Head, neck, trunk Appendicular part – the appendages arms, legs

Body Planes and Sections The body may be sectioned (cut) along a flat surface called a plane. The three most common planes are: Sagittal (Median) plane (cuts body into left & right) Frontal (coronal) plane (cuts body into front & back) Transverse plane (cross section) (cuts body into superior & inferior parts) Sagittal – think twins

Body Planes and Sections Which plane could be used to separate the hemispheres of the brain? sagittal the top and bottom of the kidney? transverse The anterior and posterior parts of the body? frontal Use full sentences

Body Cavities Each membrane enclosed by double layered serous membranes, or serosa.

Body Cavities Dorsal, vertebral Ventral, thoracic Dorsal, cranial In which cavity are the following organs are found: Name both the major and minor divisions. Spinal cord Lungs Brain Liver Bladder Small intestine Dorsal, vertebral Ventral, thoracic Dorsal, cranial Ventral, abdominal Ventral, pelvic Ventral, abdominal

Practice!