Adaptations For Transport Definitions

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  • Created by: Tasha.L
  • Created on: 24-04-16 19:48
Single Circulatory System
The blood does not move around in blood vessels but it bathes the tissues directly while held in a cavity called the haemocoel.
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Closed Circulatory System
The blood is confined to blood vessels.
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Single Circulation
The blood moves through the heart once in its passage around the body.
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Double Circulation
The blood moves through the heart twice in its circuit around the body.
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Pulmonary Circulation
This circulation serves the lungs. Deoxygenated blood is pumped from the right side of the heart through the pulmonary artery to the lungs. Oxygenated blood then returns to the left side of the heart through the pulmonary vein.
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Systemic Circulation
This circulation serves the body tissues. Oxygenated blood is pumped through the aorta from the left side of the heart. Deoxygenated blood then returns to the right side of the heart through the vena cava
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Myogenic Contraction
This is when the muscles can contract and relax rhythmically, on its own accord.
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Sino-Atrial Node
This is an area of the right atrium that initiates a wave of electrical excitation across the atria.
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Atrio-Ventricular Node
The area of the heart that delays the transmission of the wave of electrical excitation to the ventricles, ensuring that the atria have finished contracting before the ventricles contract.
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Affinity
The degree to which two molecules are attracted to each other.
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Cooperative Binding.
The increasing ease with which haemoglobin binds its second and third oxygen molecules as the shape of the haemoglobin molecule changes.
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Bohr Effect
The movement of the oxygen dissociation curve to the right at a greater partial pressure of carbon dioxide. At any given partial pressure of oxygen, haemoglobin has a lower affinity for oxygen.
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Chloride Shift
The diffusion of Cl- ions into the red blood cell to maintain its electrochemical neutrality.
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Other cards in this set

Card 2

Front

The blood is confined to blood vessels.

Back

Closed Circulatory System

Card 3

Front

The blood moves through the heart once in its passage around the body.

Back

Preview of the back of card 3

Card 4

Front

The blood moves through the heart twice in its circuit around the body.

Back

Preview of the back of card 4

Card 5

Front

This circulation serves the lungs. Deoxygenated blood is pumped from the right side of the heart through the pulmonary artery to the lungs. Oxygenated blood then returns to the left side of the heart through the pulmonary vein.

Back

Preview of the back of card 5
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