Endocrine System. Listen Things That Can Go Wrong Too much or too little of any hormone can be harmful to your body.
For example, if the pituitary gland produces too much growth hormone, a teen may grow excessively tall. If it produces too little, a teen may be unusually short. Doctors can often treat problems with the endocrine system by controlling the production of hormones or replacing certain hormones with medication. Endocrine problems that can affect teens include: Adrenal insufficiency. Type 1 diabetes. Type 2 diabetes. Growth hormone problems. Hormonal (endocrine) system - Better Health Channel. Exocrine glands Endocrine glands make chemicals called hormones and pass them straight into the bloodstream.
Hormones can be thought of as chemical messages. From the blood stream, the hormones communicate with the body by heading towards their target cell to bring about a particular change or effect to that cell. The hormone can also create changes in the cells of surrounding tissues (paracrine effect). Human Endocrine System. MLA style: "human endocrine system".
Encyclopædia Britannica. Encyclopædia Britannica Online.Encyclopædia Britannica Inc., 2016. Web. 08 Aug. 2016< APA style: Endocrine System: Facts, Functions and Diseases. The endocrine system is the collection of glands that produce hormones that regulate metabolism, growth and development, tissue function, sexual function, reproduction, sleep, and mood, among other things.
The endocrine system is made up of the pituitary gland, thyroid gland, parathyroid glands, adrenal glands, pancreas, ovaries (in females) and testicles (in males), the Mayo Clinic notes. The word endocrine derives from the Greek words "endo," meaning within, and "crinis," meaning to secrete, according to Health Mentor Online. Immune System: Diseases, Disorders & Function.
The role of the immune system — a collection of structures and processes within the body — is to protect against disease or other potentially damaging foreign bodies.
When functioning properly, the immune system identifies a variety of threats, including viruses, bacteria and parasites, and distinguishes them from the body's own healthy tissue, according to Merck Manuals. Lymph nodes: Small, bean-shaped structures that produce and store cells that fight infection and disease and are part of the lymphatic system — which consists of bone marrow, spleen, thymus and lymph nodes, according to "A Practical Guide To Clinical Medicine" from the University of California San Diego (UCSD).
Immune System. Listen.
The immune system. The immune system. Immune; immunity; disease; bacteria; viruses; white; cells; lymph; germs; mucous; mucus; glands; Contents Immunity (say im-yoon-it-i) means that you are protected against something.
There are different kinds of immunity. This topic is about how different parts of our bodies work together to keep us from getting sick. Immunity to some diseases is passed on from our mothers before we are born. Every body has an inbuilt immune system which protects it from diseases and germs. Every day your body is exposed to millions of germs, and you do not get sick from them because of your immune system. Nervous System: Facts, Function & Diseases.
The nervous system is a complex collection of nerves and specialized cells known as neurons that transmit signals between different parts of the body.
It is essentially the body’s electrical wiring. Nervous system - Better Health Channel. Neurones are the building blocks.
Nervous System: Explore the Nerves with Interactive Anatomy Pictures. [Continued from above] . . . 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. Nervous TissueThe majority of the nervous system is tissue made up of two classes of cells: neurons and neuroglia. Neurons. Neurons, also known as nerve cells, communicate within the body by transmitting electrochemical signals. Neurons look quite different from other cells in the body due to the many long cellular processes that extend from their central cell body. Brain. Brain and Nervous System. Listen. Male Reproductive System. Listen What Is the Male Reproductive System? Most species have two sexes: male and female. Each sex has its own unique reproductive system.
They are different in shape and structure, but both are specifically designed to produce, nourish, and transport either the egg or sperm. Female Reproductive System. Listen What Is the Female Reproductive System? Most species have two sexes: male and female. Each sex has its own unique reproductive system. They are different in shape and structure, but both are specifically designed to produce, nourish, and transport either the egg or sperm. Reproductive system - Better Health Channel. The female reproductive system New life begins when an egg from a woman is fertilised by sperm from a man. Eggs (ova) are made in the ovaries, and sperm in the testicles. The ovaries and testicles (gonads) also make sex hormones. The female reproductive system The female reproductive organs are the vagina, womb (uterus), fallopian tubes and ovaries: Vagina – a muscular canal around 7.5 cm long that extends from the neck of the womb to the genitals, or vulva Uterus (womb) – a muscular organ, shaped like an upside down pear.
KS3 Bitesize Science - Reproduction : Revision.