transports materials to and from cells; transports oxygen, nutrients and wastes; fights infection; helps regulate body temperature
controls growth and development and energy processes; controls many body processes by means of chemicals; helps maintain homeostasis
with skeletal systme enables movement of the body and internal organs; helps circulate blood and move food through the digestive system
Controls body's responses to changes in inside and outside environments; Detects information from the environment and controls body functions
Supports body, protects internal organs, allows movement, stores minerals, produces blood cells
List the 10 organ systems
1) Circulatory 2) Digestive 3)Endocrine 4) Excretory 5)Muscular 6) Nervous 7) Respiratory 8) Skeletal 9) Integumentary System 10) Reproductive System
What are the four levels of organization in the human body?
1) cells 2) tissues 3) organs 4) organ systems
the control center located inside the cell membrane and directs the cell's activities and contains information that determines the cell's characteristics.
a clear, jelly-like substance found between the cell membrane and the nucleus in which many important cell structures are found
What are the 4 basic types of tissue?
1) muscle tissue 2) nerve tissue 3) connective tissue 4) epithelial tissue
What do skin cells help do?
They form a protective barrier against the environment outside the body.
Which organ contains all four types of tissue (muscle, nerve, connective, and epithelial)?
the body's tendency to maintain internal balance. It is the process by which an ORGANISM'S INTERNAL ENVIRONMENT IS KEPT STABLE IN SPITE OF CHANGES IN THE OUTSIDE ENVIRONMENT
What are some ways your body maintains homeostasis?
When your body is hungry or thirsty, the brain sends signals telling you to eat or drink. Another way the body provides this is through perspiration. The sweat is the body's way of maintaining a constant temperature on a hot day.
What are some physical responses to stress?
1) hearing ability increases 2) sweating increases 3) muscles become tense 4) pupils of eyes widen 5) heart rate increases 6) digestive system slows 7) more blood goes to the brain
What is the purpose of adrenaline in the body?
It gives you a burst of energy and causes many other changes which prepares the body to take quick action.
Fight or flight
a reaction caused by adrenaline that prepares one to either fight the stressor or take flight and escape.
What are three helpful ways of dealing with stress?
1) physical activity 2) talk about the situation 3) accept and deal with the problem.
What is the order of body organization from smallest to largest level of organization?
cell, tissues, organs, organ systems, organism
the organ system that forms a protective covering on the outside of the body, the skin and its accessory structures such as hair and nails
organs and tissues involved in the production and maturation of gametes and in their union and subsequent development as offspring; produces and delivers sex cells; in females, nurtures and protects developing embryo
Structures of Digestive System
mouth, esophagus, stomach, small intestine, liver, pancreas, large intestine, rectum
Structures of Endocrine System
glands - such as thyroid, pancreas, adrenals, ovaries, testes, and others
Structures of Reproductive System
in males - testes, ducts, urethra, penis
in females - ovaries, ducts, uterus, vagina
How does the body move?
muscles and bones work together making it possible and nervous sytem tells the muscles when to act
What are the body systems involved in getting oxygen to your cells?
respiratory, circulatory, muscular and nervous
How is absorption an important function of the digestive system?
helps move nutrients through the blood to cells
a substance in food that provides energy or helps form body tissues and that is necessary for life and growth; body needs these to carry out processes such as contracting muscles
process by which nutrient molecules pass through the wall of the digestive system into the bloodstream
chemical signals or messengers released by the endocrine glands; transported through body by the circulatory system
How does your body stay in balance?
all the systems work together to maintain homeostasis - regulating temperature, meeting energy needs, maintaining water balance, keeping your balance, responding to stress, and fighting disease