"3 Organ systems" are far too few. You have:
Respiratory System: Deals with oxygen intake and carbon dioxide removal.
Digestive System: Ingestion, digestion, and absorbtion of nutrients.
Excretory System: Removal of nitrogenous wastes from the body. (AKA urine)
Lymphatic System: Deals with the return of fluids(lymph) into the blood stream.
Circulatory System: Deals with the movement of blood throughout the body in order to supply O(2) to the various parts.
Nervous System: Deals with response to stimulus and controls the other systems.
Reproductive System: Deals with the procreation of the species.
Exocrine System: Deals with the release of enzymes/hormones via ducts.
Endocrine System: Release of enzymes/hormones directly into the blood stream.
Skeletal System: Structural support system.
Muscular System: Movement and function.
Integumentary System: Protection of the body from outside objects. Includes hair and nails.
I may be missing one or two, but this is most of them.
A trick to learn them: Imagine your arm is chopped off with a machete. Five systems are apparent. First the skin in cut which is called the the (1)INTEGUMENTARY SYSTEM. You notice the blood (pumped by the heart through the veins and arteries) from the (2) CIRCULATORY SYSTEM. Obviously the pain is from the nerves (leading to the spinal cord which leads to the brain ) making up the (3) NERVOUS SYSTEM. The muscles are cut (4) MUSCULAR SYSTEM and the bones are reached (5) SKELETAL SYSTEM. Now tap your mouth which is the entry into the (6) DIGESTIVE SYSTEM. Next tap your chest which houses your lungs and the (7) RESPIRATORY SYSTEM. Finally tap the lower abdomen for the last three systems. If you get low enough you will encounter the (8) REPRODUCTIVE SYSTEM (remember there are internal parts too), (9) EXCRETORY/URINARY SYSTEM which releases urine from the kidneys, and the (10) ENDOCRINE SYSTEM which is made up of the hormone producing glands that include the adrenal glands (attached to the kidneys), pancreas (also part of the digestive system), and pituitary at the base of the brain. Some authors subdivide the Circulatory System into the Immune System.
it is what it is man think about and find a Biology book it is what it is man think about and find a biology book
The digestive system.
leaf is an example of organ.
The teamwork between the kidneys and the urinary bladder is an example of an organ system. The organ systems of the body work together for the body to function.
it all what you have in your body lol
An organ is a functional unit of a particular system in the body. Different tissues constitute an organ in that particular system. So, it varies, as to what kind of tissues function for the organ and the the type of system the organ is functioning to. Example, heart is an organ functioning as a part of circulatory system and is made up of cardiac tissues and other organelles related to its functioning. :) solydide
The digestive system.
The Cell Membrane is a structure that forms the outer boundary and allows certain materials move in and out of cell.
the heart is an organ while it is a part of the circulatory system
An organ system.
No-the skeletal system represents the bones in a body-not an organ
No, a nerve is one part of an organ system--the nervous system.
Lymphatic system.
leaf is an example of organ.
No-the skeletal system represents the bones in a body-not an organ
Cell , Tissue , Organ , Organ system .
Organisms
it all what you have in your body lol