The Human Body: An Orientation

Lets see what you already know. Take out your phones Go to this website: http://www.bbc.co.uk/science/humanbody/ Go to Interactive Body Then play the organ game.

Sign-ups for “In The News” for Research and Opinion Science News Scientific American The Scientist Discover Science Daily National Geographic Nature Local newspaper Read and summarize – ppt. an article related to the human body. It could be about diseases, new treatments, how they affect the body, different country’s methodologies, different belief’s methodologies, a culture’s longevity, or anything of your interest. Complete a “Claim-Evidence-Reasoning” form Friday’s are presentation day

Extra credit opportunity (a few points to add up to 100 in 18 weeks) When you have a question that I don’t have the answer to: Look it up and present your findings to the class as a tidbit of knowledge 5 points each = 100% extra test grade for final report card

The Human Body – An Orientation Anatomy - structure and shape of the body and its parts Physiology –how the body and its parts function

Anatomy – Levels 1. Gross Anatomy Large structures Easily observable

Microscopic Anatomy Anatomy – Levels Very small structures Can only be viewed with a microscope Chief cell Parietal cell

Levels of Structural Organization Figure 1.1

An Introduction to Body Systems Integumentary Skeletal Muscular Nervous Edocrine Cardiovascular Lymphatic Respiratory Digestive Urinary Reproductive

Integumentary Forms the external body covering Protects deeper tissue from injury Synthesizes vitamin D Location of Cutaneous nerve receptors (pain-pressure) Sweat and oil glands Figure 1.2a

Skeletal Protects and supports body organs Provides muscle attachment for movement Site of blood cell formation Stores minerals Figure 1.2b

Muscular Allows: Maintains posture Produces heat locomotion Manipulation of the environment Facial expression Maintains posture Produces heat Figure 1.2c

Nervous Fast-acting control system of the body Responds to internal and external changes by: Activating appropriate muscles and glands Figure 1.2d

Endocrine Glands secrete hormones that regulate processes such as: Growth Reproduction Metabolism (nutrient use by body cells) Figure 1.2e

Cardiovascular The heart pumps the blood Blood vessels transport blood which carries: Oxygen Carbon dioxide Nutrients Wastes The heart pumps the blood Figure 1.2f

Lymphatic Picks up fluid leaked from blood vessels and returns to the blood Disposes of debris Houses WBC’s, involved in immunity Figure 1.2g

Respiratory Keeps blood supplied with oxygen Removes carbon dioxide from the blood This exchange occurs through the walls of the air sacs (alveoli) of the lungs Figure 1.2h

Digestive Breaks down food into absorbable units The nutrients then enter the blood for distribution to body cells Indigestible food is eliminated as feces Figure 1.2i

Urinary Eliminates nitrogenous wastes Maintains acid – base balance in the blood Regulates water and electrolytes Figure 1.2j

Reproductive

QUIZ coming soon!!