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An organ that pumps blood through your body

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Heart

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Biology - Details

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1) Heart View
2) Alimentary Canal View

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56 questions

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An organ that pumps blood through your body

Heart

Collects deoxygenated blood & pumps it to the Right Ventricle

Right Atrium

Pumps deoxygenated blood to the Lungs

Right Ventricle

Carries deoxygenated blood from the Right Ventricle to the Lungs

Pulmonary Artery

Separates the Left and Right sides of the Heart

Septum

Carries oxygenated blood from the Lungs to the Left Atrium

Pulmonary Vein

Collects oxygenated blood and pumps it to the Left Ventricle

Left Atrium

Pumps oxygenated blood to the body via the Aorta

Left Ventricle

Carries oxygenated blood from Left Ventricle to the rest of the body

Aorta

Prevents back-flow of blood into the Atria when Ventricles contract (Atria ventricular valves)

Tricuspid and Bicuspid valves

Prevents back-flow of blood from the Arteries into the Ventricles (Semi-Lunar valves)

Pulmonary and Aortic valves

Transports High pressure blood away from the Heart

Artery

Transports Low pressure blood to the Heart

Vein

Allows substances to diffuse into cells

Capillary

Transports high pressure blood away from the heart

Artery

Transports low pressure blood to the heart

Vein

Allows substances to diffuse into cells

Capillary

The vein that goes from the lungs to the heart

Pulmonary Vein

The vein that goes from the liver to the heart

Hepatic Vein

The vein going from the kidneys to the heart

Renal Vein

The artery that goes from the heart to the lungs

Pulmonary Artery

The artery going from the heart to the liver

Hepatic Artery

The artery going from the heart to the kidneys

Renal Artery

Taking substances into the body through the mouth

Ingestion

Passing out of food that has not been digested, as faeces, through the anus

Egestion

The break-down of large, insoluble food molecules into small, water soluble molecules using mechanical and chemical processes

Digestion

Contains teeth used for mechanical digestion, area where food is mixed with salivary amylase and where ingestion takes place

Mouth

Produce which contains amylase and helps food slide down the oesophagus

Salivary Glands

Tube-shaped organ which uses peristalsis to transport from mouth to stomach

Oesophagus

Has sphincters to control movement into and also has pepsin (a protease) to break down proteins into peptides, it also kills bacteria with hydrochloric acid.

Stomach

Tube shaped organ composed of two parts: Duodenum and Ileum

Small Intestine

Fats are emulsified by bile and digested by pancreatic lipase to form fatty acids and glycerol. Pancreactic amylase and trypsin (a protease) break down starch annd peptides into maltose and amino acids.

Duodenum

Where maltase breaks down maltose to glucose, where absorption takes place; adapted by having villi and microvilli

Ileum

Produces pancreactic juice which contains amylase, trypsin and lipase and hydrogencarbonate

Pancreas

Produces bile and stores glucose as glycogen, interconverting them to keep glucose concentration constant. Carries out interconversion of amino acids, (transamination), deamination and removal of old red blood cells and storage of their iron. This site also breaks down alchohol and other toxins.

Liver

Stores bile from liver

Gall bladder

Produced by liver and stored in gall bladder, its role is to emulsify fats, to increase surface area for the action of enzymes

Bile

Tube shaped organ that is composed of two parts The colon and the rectum

Large intestine

An organ that absorbs minerals and vitamens and reabsorbs water from waste to maintain the body's water levels

Colon

Where faeces are temporarily stored

Rectum

A ring of muscle which controls when faeces is released

Anus

When not enough water is absorbed from the faeces

Diarrhoea

Which treatment cures Diarrhoea?

Oral rehydration therapy

What bacterium produces a toxin that causes secrection of chloride ions into the small intestine, causing osmotic movement of water into the gut, causing diarrheoa, dehydration and loss of salts from the blood?

Cholera

The strongest tissue in the body made from calcium salts

Enamel

Helps to anchor teeth

Cement

Contains tooth-producing cells, blood vessels, and nerve endings which dectect pain

Pulp cavity

Calcium salts deposited on a framework of collagen fibres

Dentine

In between crown and root, it is the gums

Neck

Where enzymes are used to break down large insoluble substances such as proteins into smaller soluble substances like amino acids so that they can be absorbed

Chemical Digestion

Breaks down starch into maltose and is produced in the pancreas and in the salivary gland

Amylase

Breaks down proteins to peptides, which is done by pepsin, then into amino acids, which is done by trypsin. Pepsin comes from the stomach and trypsin comes from the pancreas

Protease

Breaks down lipids into fatty acids and glycerol, and is produced in the pancreas

Lipase

Denaturing enzymes in harmful microorganisms in food, and giving the optimum pH for pepsin activity

Hydrochloric acid in gastric juice

Transports glucose and amino acids

Capillary

Delivers absorbed products to liver via the hepatic portal vein

Vein

Produces enzymes

Gland

Absorbs fatty acid and glycerol

Lacteal

Only one cell thick for faster transport. The cells are folded to form microvilli

Epithelium

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