Question

1) what is an organ system ?
2) what is the function of nervous system?
3) how many organ system are there? name them.

Answer 1

Answer:

1)In biology, an organ system is a group of organs that work together to perform one or more functions. Each does a particular job in the body, and is made up of certain tissues.

2)The nervous system consists of the brain, spinal cord, sensory organs, and all of the nerves that connect these organs with the rest of the body. Together, these organs are responsible for the control of the body and communication among its parts

3)The 11 organ systems of the body are the integumentary, muscular, skeletal, nervous, circulatory, lymphatic, respiratory, endocrine, urinary/excretory, reproductive and digestive. Although each of your 11 organ systems has a unique function, each organ system also depends, directly or indirectly, on all the others

Answer 2

Explanation:

1).An organ system is a group of organs that work together as a biological system to perform one or more functions. Each organ does a particular job in the body, and is made up of distinct tissues.

Organs systems and their functions Edit

There are eleven distinct organ systems in human beings, which form the basis of anatomy. Other animals have similar organ systems, although simpler animals may have fewer organs in an organ system or even fewer organ systems. Plants too have organs, such as flowers and leaves, and these are grouped into organ systems as well.

Organ System Description Component Organs

Respiratory system breathing: exchange of oxygen and carbon dioxide nose, mouth, sinus, pharynx, larynx, trachea, bronchi, lungs and diaphragm.

Digestive system digestion: breakdown and absorption of nutrients, excretion of solid wastes teeth, tongue, salivary glands, esophagus, stomach, liver, gallbladder, pancreas, small intestine, large intestine, rectum and anus

Cardiovascular system circulate blood in order to transport nutrients, waste, hormones, O2, CO2, and aid in maintaining pH and temperature blood, heart, arteries, veins, capillaries

Urinary system maintain fluid and electrolyte balance, purify blood and excrete liquid waste (urine) kidneys, ureters, bladder and urethra

Integumentary system exterior protection of body and thermal regulation skin, hair, exocrine glands, fat, and nails

Skeletal system structural support and protection, production of blood cells bones, cartilage, ligaments and tendons.

Muscular system movement of body, production of heat skeletal muscles, smooth muscles and cardiac muscle

Endocrine system communication within the body using hormones made by endocrine glands hypothalamus, pituitary, pineal gland, thyroid, parathyroid and adrenal glands, ovaries, testes

Lymphatic system return fluids (lymph) to blood stream, aid immune responses, form white blood cells lymph, lymph nodes, lymph vessels, tonsils, spleen, thymus

Nervous system sensing and processing information, controlling body activities brain, spinal cord, nerves, sensory organs (e.g. vision, smell, taste, hearing)

Reproductive system sex organs involved in reproduction ovaries, fallopian tubes, uterus, vagina, mammary glands, penis, testes, vas deferens, seminal vesicles and prostate

There are other systems in the body that are not organ systems. For example, the Immune system protects the organism from infection, but it is not an organ system as it is not composed of organs.

Some organs are in more than one system. For example, the nose is in both the respiratory system and also is a sensory organ in the nervous system. The testes and ovary are both part of the reproductive systems and endocrine systems.

2).The nervous system consists of the brain, spinal cord, sensory organs, and all of the nerves that connect these organs with the rest of the body. Together, these organs are responsible for the control of the body and communication among its parts. The brain and spinal cord form the control center known as the central nervous system (CNS), where information is evaluated and decisions made. The sensory nerves and sense organs of the peripheral nervous system (PNS) monitor conditions inside and outside of the body and send this information to the CNS. Efferent nerves in the PNS carry signals from the control center to the muscles, glands, and organs to regulate their functions

3).The human body is composed of 11 different organ systems. These include the following:

Integumentary

Muscular

Skeletal

Nervous

Circulatory

Lymphatic

Respiratory

Endocrine

Urinary/excretory

Reproductive

Digestive