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Why does an organ usually need more than one type of tissue?
because diferent tissues carry diferent jobs
In what parts of the body are oxygen and CO2 exchanged?
The gaseous exchange of oxygen (O2) and carbon dioxide (CO2) occurs within the lungs. Oxygen is inhaled through the mouth and nose, it passes through the bronchi, which branch off into smaller airways called bronchioles. It is at the ends of these bronchioles where the Alveoli are, (tiny, pear shaped sacks).When oxygen enters the Alveoli, it is diffused into the surrounding capillaries (which are one cell thick). It is also in the alveoli where carbon dioxide is exchanged, the carbon dioxide is removed from the blood plasma in the surrounding capillaries, where it begins it's process of expiration (breathing out).I'm an A level student, and have just finished doing Anatomy and Physiology exam for Health and Social Care
Does fungi have specialized tissue?
help i need help
How the anatomical design of the hepatic circulation serves its function?
You have capillaries in the gastrointestinal tract. The capillaries unite to form the veins. You have again formation of the capillaries in the liver. Here the blood has to pass through the sinusoids to the central vein. The blood is accompanied by blood from the hepatic artery. The portal blood carry the nutrients. The hepatic artery carry the oxygen. The liver cells are metabolically active. They need both to perform the desired function. So you have very unique arrangement in the liver. So you have capillaries - veins - capillaries in portal circulation.
Why do plants have tissue?
because plants need space to store the stuff
What is Layer of tissues that produce digestive enzymes?
no way because they need to answer themselves
Why does an organ usually need more than one type of tissue?
because diferent tissues carry diferent jobs
What happens when blood reaches tissue that doesnt have enough oxygen?
Once oxygenated blood reaches the capillaries, the velocity of the blood is very slow - which favours the exchange of oxygen. Oxygen therefore diffuses across the walls of the capillaries into the tissues that need it.
Why does the human digestive system need glandular tissue?
The human digestive system needs glandular tissue to secrete the many substances needed to break down food both mechanically and chemically. Saliva and bile help with the physical breakdown of food. Many other substances, including gastric secretions and pancreatic fluid, assist with chemical breakdown of food.
What is close to all living cells in the body?
There are blood capillaries close to all of the cells in our body, so that the cells can get all of the energy they need to survive.Blood capillaries are only one cell thick, so that nutrients and oxygen can pass through them easily.
Why do you need capillaries?
Arteries carry blood to the tissues, and veins carry blood back to the heart. In betweenare tiny blood vessels so small that red blood cells can pass through single file, allowingthe oxygen to diffuse into the surrounding tissue. These are called capillaries.
Why bone marrow does not have lymphatic drain?
because the amount of fluid that get out from capillaries are low,,,,as we know the lymphatic vessels drain the excess amount of fluid that gets out from capillaries,,,so in bone marrow there is no high amount of fluid so there is no need to have lymphatic drainage :))
How long do bellybutton holes stay open I've had it 13 years?
Well as long as you have had it it won't close, after that period of time you would need to have the tissue lanced and stiched to close the piercing.
Why do air sacs need to have a rich supply of capillaries?
They need a lot of blood.
Do red blood cells have to squeeze through veins arteries or capillaries?
Capillaries, as they are the smallest blood vessels in the body, thus the need to "squeeze"
Why do capillaries need to be so thin?
so they can allow for gas exchange
Why must capillaries have a greater surface area to volume ratio compared to arteries?
Capillaries are tiny blood vessels. They need to have a greater surface area to volume ratio because they need to diffuse oxygen quicker.
