Unit 0 Organization of the Human Body & Homeostasis

Levels of Organization

Atom & Molecular level —> Macromolecule —→ Cellular (basic unit of life)—> Tissue —> Organ —> Organ System —> Organism

Cell

Basic unit of Life.

All levels of organization are ______

Interconnected

At what level of organization do statins work most directly?

Molecule

Wha other levels of organization do statins affect physiologically?

Statins impact all levels of organization from molecule to the organism .

Organ System = groupd of organs that coordinate to perform a common ____

Function

Protection, Support & Movement

Integumentary, Skelatal , Muscular

Communcation & Integration

Nervous , Endocrine (hormones)

Transport & Immunity

Cardiovascular , Lymphatic (lymphoid organs)

Nutrient , gas & waste exchange

Digestive , Respiratory , Urinary

Reproduction (1 system with two variations )

Male & Female

Bodies are highly ______

integrated

Organs & systems have many ______ functions.

Overlapping (shared)

Characteristics of Life

Growth, Reproduction ,Responsivenss , Movement , Metabolism

Growth

Increase in cell number and size and increase in body size.

Reproduction

Production of new cells and organisms

Responsiveness

Reaction to a change inside or outside of the body.

Movement

Change in body position or location ; motion of internal organs.

Metabolism

The sum of all chemical reactions in a living system: Energy production and nutrient cycling.

Physiologic Events of Metabolism

Respiration, Digestion ,Circulation and Excertion

Respiratory system

Making energy . Most organisms do it by taking in oxygen and giving of carbon dioxide.

Digestive system

Breaking down food into usable nutrients for absorption into the blood .

Cardiovascular System

Moving chemicals and cells through the body fluids .

Urinary & Digestive system

Removing waste products

Homeostasis

Maintenance of stable INTERNAL environment .