Sístole.Contracción.Las aurículas se contraen e impulsan sangre a los ventrículos que están relajados. Diástole.Relajación.Las aurículas se relajan y los ventrí
What two things does the environment provide for cells?
Matter and energy
How is lymph plasma formed?
It’s form when interstitial plasma is filtered.
What is the cardiac output?
It’s the volume of blood the heart pumps in one minute.
What is the heart rate?
The heart rate is the number of times the heart beats per unit of time.The heart beats approximately 70 times per minute.
Why our circulation is closed?
Because blood is always inside the blood vessels (vasos sanguíneos).
The lymphatic system is part of the...
circulatory system.
Why does blood have a low speed when it reaches the cells?
Because blood give them nutrients and oxygen,and blood take them waste substances from cells.
What are blood vessels?Name their types.
They are vessels of blood that carry blood around the body. Types:arteries,capillaries,veins.
What are the two movements of the heart?
Systole and diastole.
What are the functions on lymphatic system?
Functions: -They make white blood cells . -They transport lipids or fats.
Arteries:
Arteries:these carry blood from the heart to other organs.They have wide muscular walls and are elastic.
What is the heart?What is its function?
It’s a hollow muscular organ. Function-To pump the blood.
What are the lymphatic organs?And their functions?
Spleen,thymus and bones marrow(médula ósea). Function:to produce white blood cells.
The lymphatic system has three main differences when compared to the blood circulatory system:
lymph travels through it vessels;circulations isn’t due to the direct action of the heart;and the movement is unidirectional(tissues-lymphatic vessels-bl
Explain the shape of lymphatic veins.
They are ondulated.
What is the heartbeat?
It’s a constant movement that heart performs.
What is the internal environment?
It’s all the substances that are out of the cells,so they form part of the interstitial plasma.
What elements does the lymphatic system form?
The lymphatic system is composed of lymph(linfa),lymphatic vessels (vasos linfáticos),lymphatic organs(such as the spleen (bazo) and thymus(timo)),lymphatic tis
Why does interstitial plasma have to be renewed continuously?What elements does this function perform?
Because new nutrients need to be provided and waste products can’t be allowed to accumulate and must be released. The blood.
Blood cells:
Blood cells:the three types of blood cells are erythrocytes,leukocytes and thrombocytes.
Blood plasma:
Blood plasma: made up of water with minerals(90%),nutrients(glucose,amino acids, vitamins…),waste products(urea,uric acid,CO2),proteins and dissolved hormones.
Capillaries:
Capillaries:these are microscopic blood vessels located in all the organism’s tissues.Capillaries are formed by walls that only have one layer of cells.This all
What is the function of valves?
To avoid that the blood go back.
Veins:
carry blood from tissues to the heart.They have thinner walls than arteries.In addition,they have valves that stop blood from going backwards.They are form wher
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