Chapter 1- Orientation to the Human Body

What is anatomy?

the structure of the body and body part

What is physiology?

the function of the body and body parts

Levels of organization of the body(simple to complex)

Atoms,molecules,organelles,cells,tissues,organs,organ systems, organism.

Atom is:

the smallest unit of matter that combines to form chemicals

Chemical is:

substances with a distinct molecular composition

Organelle is:

structural/metabolic units within cells that have specific functions

Cell is:

the basic structural unit of living organisms

tissue is:

group of cells with similar structures and functions working together to perform a function

organ is:

group of tissue working together to perform a function

organ system is

group of organs that all contribute to a particular function

organism is:

group of systems working together

Integumentary system function:

Protection, Temperature regulation, water retention, sensation

Skeletal system function:

protection of body organs,support, movement,blood formation.

Muscular system function:

movement ,posture, heat production

Nervous system function:

Control,regulation,and coordination of other systems, sensation,memory

Endocrine System function:

Hormone production,control and regulation of other systems

Circulatory system function:

Distribution of oxygen,nutrients,wastes,hormones,electrolytes,immune cells,and antibodies, Fluid,electrolyte,and acid-base balance.

Lymphatic system function:

Role in fluid balance,Production of immune cells,Defense against disease

Respiratory system function:

Absorption of oxygen,Discharge of carbon dioxide,Acid-base balance,Speech

digestive system function:

Breakdown and absorption of nutrients,Elimination of wastes

Urinary system function:

Excretion of wastes,regulation of blood volume and pressure,Control of fluid,electrolyte,and acid-base balance

Male reproduction system function:

Production and delivery of sperm, Secretion of sex hormones

Female reproduction system function:

Production of eggs ,Site of fertilization and fetal development,Birth,Lactation,Secretion of sex hormones

In the anatomical position,the palms are facing ____

foward