17 results found

Search Results for: sphincter

Internal urethral sphincter

Definition noun The urethral sphincter made up of smooth muscle cells found at the inferior end of the urinary bladder and... Read More

External urethral sphincter

Definition noun The urethral sphincter associated with the discharge of urine in both males and females, and where semen is... Read More

Digestion and Absorption of Food

The gastrointestinal (GI) system includes the gastrointestinal tract (mouth, pharynx, esophagus, stomach, small intestine,... Read More

Kidneys and Regulation of Water and Inorganic Ions

Renal Functions Kidneys remove/add substances from/to the plasma. Regulate water concentration, inorganic ion... Read More

Peristalsis

What is Peristalsis? Peristalsis is the series of involuntary, wave-like muscle movements in the cylindrical, hollow tube... Read More

Digestive Enzymes

Have you ever thought about what happens to the food after you have taken it into your mouth? How those big steak pieces... Read More

Urethra

Definition noun, plural: urethrae or urethras (anatomy) The tube extending from the urinary bladder to the urinary meatus,... Read More

Alimentary canal

Definition of Alimentary canal What is the alimentary canal? The alimentary canal is a muscular hollow continuous tubular... Read More

Meltzer-lyon test

Meltzer-Lyon test A test used in diagnosis of gallbladder conditions: 25 ml of a 25% solution of magnesium sulfate are... Read More

Ganglia

Ganglia Definition What are ganglia? To simply define ganglia in biology, it is the structure of an oval shape that... Read More

Orbicularis oris

orbicularis oris (Science: anatomy, muscle) origin, by nasolabial band from septum of the nose, by superior incisive bundle... Read More

Ganglion

Ganglia Definition What are ganglia? To simply define ganglia in biology, it is the structure of an oval shape that... Read More

Egestion

Egestion is the act or process of voiding or discharging undigested food as faeces. To egest means to discharge undigested... Read More

Micturition reflex

micturition reflex contraction of the walls of the bladder and relaxation of the trigone and urethral sphincter in response... Read More

External urethral orifice

Definition noun The meatus of the urethra where urine is excreted in both males and females, and where semen is ejected in... Read More

Corrugator cutis muscle of anus

Corrugator cutis muscle of anus smooth muscle fibres radiating from the anal opening superficial to the external... Read More

Human Reproduction

Terminology and Concepts Primary reproductive organs are called gonads - testes in the male and ovaries in the female.... Read More