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Biology > Transport in animals > Flashcards

Transport in animals Flashcards

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AP® Biology flashcards Biology 101 flashcards
1
Q

Double circulatory system

A

Blood passes through the heart twice for each circuit of the body

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2
Q

Tissue fluid

A

Fluid that is derived from blood plasma that bathes cells

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3
Q

Systemic circulation

A

The circulation that carries blood around the body excluding the lungs`

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4
Q

Single circulatory system

A

Blood passes through the heart once for each circuit of the body

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5
Q

Bohr effect

A

The decrease in affinity of haemoglobin for oxygen in the pressence of carbon dioxide

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6
Q

Closed circulatory system

A

Blood is contained with blood vessels

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7
Q

Buffer

A

A substance that maintains a constant pH

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8
Q

Diastole

A

Relaxtion of the heart muscle

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9
Q

Systole

A

Contraction of the heart muscle

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10
Q

Single circulatory system

A

Blood passes through the heart once for each circuit of the body

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11
Q

Coronery arteries

A

An artery that branches off from the aorta that supplies oxygenated blood to the muscle

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12
Q

Dissociation curve

A

The curve on a graph that shows the proportion of haemoglobin that is saturated with oxygen at different oxygen partial pressures

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13
Q

Cardiac cycle

A

The sequence of events that takes place in the heart during one heartbeat

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14
Q

Open circulatory system

A

Blood is not contained in blood vessels

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15
Q

Electrocardiogram

A

The trace (graph) showing the electrical activity of the heart muscle during the cardiac cycle

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16
Q

Pulmonary circulation

A

Circulation of blood through the lungs

17
Q

Diastole 1

A

Blood enters the right atria from the vena cava and left atria from the pulmonery vein
Pressure in the atria increases
Bicuspid and tricuspid valves open slightly
Blood starts to enter ventricles

18
Q

Atrial systole

A

Walls of the atria contract
bicuspid and tricuspid valves open fully
blood from the atria is forced into the venticles

19
Q

Ventricular systole

A

Blood pressure in the ventricles is higher than the atria. atrio ventricular valves close.prevents back flow from ventricles to atria
blood pressure in ventricles is higher than the arteries. semi lunar valves open
ventricles contract
blood is forced into pulmonary artey and the aorta

20
Q

Diastole 2

A

Blood pressure in teh arteries is greater than in the ventricles
semi lunar valves close to prevent backflow of blood into the ventricles

Biology (6 decks)

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