Human Organs and their functions, Humans Organs photo, Human Organs functioning, Human Organs still, Human body studies, Human Organs Studies,

HUMAN ORGANS AND

THEIR FUNCTIONS

Adenoids:

Often these organs are enlarged in children and obstruct nasal breathing.

Adrenal Glands:

Essential to life and for hormone secretions such as adrenalin,cortisone, etc. Regulates chemistry of essential body chemicals such as sodium, chlorides, potassium

Anus :

Is muscles control bowel evacuation.

Appendix:

It is a vestige of man’s primitive past.

Bladder:

Acts as reservoir for urine which has been excreted by kidneys.

Bone marrow:

Manufactures blood cells.

Brain:

Control of mental and nerve activities.

Bronchial tubes:

These are the tubes through which air moves in and out of the lungs.

Breasts:

In female, he breasts secrete milk, to suckle he babies.

Cervix of uterus:

Acts as barrier to infection; acts as passageway for sperm to enter uterus; dilates at childbirth to allow exit of unborn child.

Colon:

Absorbs water from stool and propels stool on toward anus.

Duodenum:

Receives food from stomach and propels it on, receives bile from liver and gallbladder, receives digestive juices from pancreas, secretes digestive juices of its own.

Esophagus:

Transports swallowed food o stomach.

Fallopian tubes:

Transports egg from ovary to uterus. Fertilization of egg takes place within fallopian tube.

Gallbladder:

Stores and concentrates bile received from liver, and expels it into bile ducts, which carry it to intestinal tract.

Heart:

Pumps blood throughout body.

Ileum:

Absorbs food, absorbs water from intestinal contents, aids in digesting foodsl propels contents on to large intestine.

Jejunum:

Absorbs food, absorbs water from intestinal contents, aids in digesting foods propels contents onward.

Kidneys:

Filters excretes and reabsorbs and thus helps to control balance of blood constituents.

Larynx:

Controls act of speaking.

Liver:

Manufactures bile, controls metabolism of proteins, stores fat and sugar and purifies the blood.

Lungs:

These are the organs of respiration. They extract oxygen from air which is inhaled and they get rid of carbon dioxide with air which is exhaled.

Ovaries:

Produce an egg each month which, when fertilized, forms an embryo. Ovaries manufacture female hormones which are secreted into blood stream.

Pancreas:

Manufactures insulin, which controls sugar metabolism. Manufactures juices which help to digest foods.

Parathyroid glands:

Manufacture a hormone which controls metabolism of calcium and phosphorus.

Penis:

Male organ of intercourse. This organ acts as conveyor of urine from bladder.

Pharynx:

Commonly called the throat, it is the passageway for food and drink and also for air which is breathed.

Pituitary gland:

A most important gland whose hormone secretions, directly or indirectly, control metabolism. It is responsible for growth and for proper thyroid, adrenal and ovarian gland function.

Prostate gland:

I secrets fluid in which sperm are transported during ejaculation.

Pylorus:

Its strong muscle fibres regulate outflow of stomach contents into duodenum.

Rectum:

It conveys stool toward outlet of intestinal truct.

Seminal vesicles:

Store semen for discharge through the ejaculatory ducts when orgasm takes place.

Spinal cord:

This structure contains the nerves which travel from and to the brain and thus are responsible for sensation and movements.

Spleen:

In he unborn child, it manufactures blood cells. In the fully formed human, it destroys old, worn-out blood cells.

Stomach:

It churns undigested food and initiates digestion. It manufactures hydrochloric acid which helps to break down large food particles.

Testicles:

They manufacture sperm which are conveyed by the vas deferens to the seminal vesicles. They secrete male sex hormone into blood stream.

Thymus gland:

After the second year of life it degenerates. Nothing is known about its function.

Thyroid gland:

Manufactures the hormone, thyroxin, which controls metabolism.

Tongue:

This is an organ of taste. This helps in chewing and swallowing. This helps in the act of speaking.

Tonsils:

Function unknown.

Trachea:

Conveys air into and out of lungs.

Ureters:

Conveys urine from bladder to outside.

Uterus:

The organ in female womb within which the embryo develops.

Vagina:

The female organ in intercourse leading to the cervix. It is also through this canal that the newborn child is delivered.