« Previous 1 3 4
Click flashcard terms on the left to see their definitions.
High Scores
There are no High Scores Yet.
image licenses
Some of the images from this list come from Flickr and/or Wikipedia and are licensed under the Creative Commons. This product uses the Flickr API but is not endorsed or certified by Flickr.
Share This List

All terms in this list:

blood: It transports: Oxygen from the lungs all other parts of the body. -Carbon dioxide from all parts of the body to the lungs. -Nutrients from all parts of the body to the lungs. -Urea from the liver to the kidneys.

Single Circulatory System: Blood is pumped from the heart to the gas exchange system organ and then directly to the rest of the body.

Double Circulatory System: Blood is pumped from the heart to the gas exchange organ, back to the heart and then to the rest of the body.

Pulmonary Circulation: Blood is circulated through the lungs where it is oxygenated.

Systematic Circulation: Blood is circulated through all parts of the body, where it unloads its oxygen.

Blood Vessels: Carry blood around the body.

Arteries: Carry blood away from the heart and towards other organs.

Veins: Carry blood towards the heart and away from other organs.

Capillaries: Carry blood through organs.

Systole: Rhythmic contraction of a chamber of the heart.

Diastole: The relaxation and dilation of the heart chambers, between contractions, during which they fill with blood.

watch-pocket valve: Valves which prevent the backflow of blood inside veins.

Arterioles: Small arteries, similar in structure to the larger ones, but have a high proportion of muscle fibres in their walls. They carry blood into organs from arteries.

Plasma: It carries dissolved nutrients, blood cells, hormones, carbon dioxide and urea, also distributes heat around the body.

red blood cells: Biconcave disc-like cells with no nucleus. Contain haemoglobin, which loads oxygen in the lungs and unloads it in other parts of the body.

lymphocytes: Same size as red blood cells but have a large spherical nucleus. Produce antibodies to destroy microorganisms.

phagocytes: Large cell with a large spherical or lobed nucleus which engulf bacteria and other microorganisms.

platelets: Small cells which are fragments of other cells that release chemicals to make blood clot in open wounds.

erythrocytes: Red blood cells.

Surface Area to Volume ratio: It can be written as: surface area/volume

Cardiac Muscle: It moves blood by a series of contractions and relaxations of its chambers.

Heart Rate: The number of heart beats per unit of time, usually expressed as beats per minute. Normally 70 times a minute. It increases with exercise, stress, and the secretion of adrenaline. It decreases when we sleep.

Medulla: Part of the brain which controls heart rate, detecting the nerve impulses sent by the aorta and the carotid artery.

Accelerator Nerve: Increases the heart rate, causes the heart to beat with more force and increases blood pressure.

Decelerator Nerve: Decreases heart rate, reduces force of the contractions, and causes blood pressure to return to normal.

Tricuspid Valve: A heart valve with three cusps which prevents backflow of blood from the right ventricle into the right atrium.

Pulmonary Vein: Vein which returns the blood to the heart after it has circulated through the lungs.

Pulmonary Artery: The artery that connects the right ventricle of the heart to the lungs, and carries blood from the heart to the lungs.

Vena Cava: Vein that takes oxygen depleted blood away from the organs and returns it to the right atrium of the heart.

Mitral Valve: Bicuspid valve that lies between the left atrium and the left ventricle.

Aorta: The great artery which carries the blood from the heart to all parts of the body except the lungs; the main trunk of the arterial system.

Cardiac Centre: Region of the medulla that controls heart functions.

Friends with BookmarkOS

Definitions from Wiktionary under the GNU FDL.
Sentences copyrighted by their respective publishers.
terms of service privacy policy