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Body Systems.

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Presentation on theme: "Body Systems."— Presentation transcript:

1 Body Systems

2 Learning Expectations
1.1 Distinguish between anatomy and physiology. 1.2 Investigate the structure of the major body systems and relate the functions. 1.3 Investigate the major body cavities and the subdivisions of each cavity. 1.4 Apply correct anatomical terminology of body parts and regions.

3 Overview ANATOMY – study of the parts of the body
PHYSIOLOGY – function of the body ANATOMICAL POSITION – standing erect with feet parallel and the arms hanging at the sides with palms facing forward. HOMEOSTASIS- pp. 2, 11

4 Many Levels of Structural Organization
Chemical level- Atoms combine to form molecules Cellular level- reflect their particular functions in the body Tissue level- Consist of groups of similar cells (epithelial, connective, muscular, and neural) Organ level- two or more tissue types making an organ with complex function Organ system level- group of organs that cooperate to accomplish a common purpose (example: cardiovascular system with heart and blood vessels)

5 Organ Systems Overview
ORGAN SYSTEM – a group of organs which act together to perform a specific, related function Integumentary Skeletal Muscular Nervous Endocrine Cardiovascular Lymphatic Digestive Respiratory Urinary Reproductive

6 Worksheet Handout #1and 2

7 Alert! Test Friday

8 Analyze anatomical position.
Activity: Assume the anatomical position. comment on how that position differs from the “usual” standing position explain why knowing this position is important to precisely identify anatomical terms and physiological processes.

9 Anatomic Terminology Position and Directional Terms
ANTERIOR or VENTRAL – front or in front of POSTERIOR or DORSAL – back or in back of CRANIAL – refers to the head of the body CAUDAL – means tail end SUPERIOR – upper or above something INFERIOR – lower or below something MEDIAL – toward the middle LATERAL – toward the side of the body PROXIMAL – toward the point of attachment to the body or the trunk of the body DISTAL – away from the point of attachment to the body SUPERFICIAL (EXTERNAL) – near the surface or outside the body DEEP (INTERNAL) – inside the body

10 Body Planes and Sections
PLANES – imaginary anatomical dividing planes SECTION – cut made through the body in the direction of a certain plane 1. SAGITTAL PLANE – divides the body into right and left parts 2. CORONAL (FRONTAL) PLANE – vertical cut at right angles to saggital plane, divides the body into anterior and posterior portions 3. TRANSVERSE PLANE – cross-section, a horizontal cut that divides the body into upper and lower parts

11 Three Major Planes When a section or cut is made through
the body wall or an organ, it is made along an imaginary line called a plane. What kind of section would have to be made to cut the brain into right and left parts? What kind of section would have to be made to divide the body (or an organ) into anterior and posterior parts? What is a cut made along a horizontal plane, dividing the body into superior and inferior parts?

12 Cavities of the Body DORSAL CAVITY – contains brain and spinal cord – the brain is in the CRANIAL CAVITY and the spinal cord is in the SPINAL CAVITY. ANTERIOR or VENTRAL CAVITY contains the THORACIC and ABDOMINOPELVIC CAVITIES The thoracic cavity contains the lungs and heart ABDOMINAL CAVITY contains stomach, intestines, liver, gallbladder and pancreas PELVIC CAVITY contains urinary bladder and reproductive organs

13 Alert! Study the “Body Cavity” quiz on Wednesday

14 Body Cavities 1 2 3 5 Label the diagram

15 Abdominopelvic Cavity Regions

16 Activity Body Systems Worksheet #3 and #4

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