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Biology > The human body > Flashcards

The human body Flashcards

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1
Q

Plasma

A

▪️90% water
▪️Carries platelets and red and white blood cells
▪️Carries dissolved substance (10%) e.g Glucose,proteins,urea.

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2
Q

Aorta

A

It is the main artery that takes the blood away from the heart and to the rest of the body.

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3
Q

Vena cava

A

Deoxygenated blood enters the right atrium of the heart through the venae cavae

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4
Q

Haemoglobin

A

Red pigment that contains iron. Located in red blood cells, carries oxygen.

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5
Q

Septum

A

the heart is a double pump, separated into the left and right side by the septum

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6
Q

Atria

A

the upper chambers of the heart, where blood first enters the heart.

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7
Q

Ventricles

A

the lower chambers of the heart where blood goes when it leaves the atria

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8
Q

Pulmonary artery

A

brings deoxygenated blood from the body to the heart.

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9
Q

Pulse

A

A wave of vibrations that passes through an artery in response to blood being forced out of the left ventricle.

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10
Q

Valves

A

Gateways that open and close to let blood flow through the heart, and stop backflow in the

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11
Q

Healthy heart

A

A balanced diet, exercise and rest are very important for a healthy heart.

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12
Q

Oxygenated blood:

A

Blood rich in oxygen that comes from the lungs.

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13
Q

Deoxygenated blood:

A

Blood that comes from other parts of the body that has less oxygen, and more carbon dioxide. It must go to the lungs to get more oxygen.

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14
Q

PancreasIngestion:

A

the food is taken into the mouth

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15
Q

Digestion

A

the food is broken down into simpler, absorbable molecules

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16
Q

Absorption

A

the absorbable molecules are passed into the blood and carried to all of the cells of the body

17
Q

Assimilation

A

the food is used by the body for energy and to build new cells

18
Q

Egestion

A

undigested food material is released from the digestive system as faeces

19
Q

Villi

A

small fingerlike projections along the small intestines that

20
Q

Ingestion

A

The the food is taken into the mouth

21
Q

enzymes

A

act on a substrate and breaks it down into a product

22
Q

Mouth

A

Physical and chemical digestion

23
Q

Oesphagus

A

Brings food from mouth to stomach

24
Q

Liver

A

Makes bile

25
Q

Stomach

A

Physical and chemical digestion

26
Q

Pancreas

A

Makes digestive juices

27
Q

Small intestine

A

Most chemical digestion

28
Q

Large intestine

A

Water reabsorption

29
Q

Rectum

A

Stores undigested food

30
Q

Anus

A

Undigested food passes out

31
Q

Salivary gland:

A

secrete saliva onto the food in the mouth to help soften food.

32
Q

The human dental formula:

A

2.1.2.3 (twice) for half of upper and lower jaw

33
Q

Hydrochloric acid

A

in the stomach chemically digests food and kills bacteria

Biology (6 decks)

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