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The traditional approach is that human and animal hormones are produced in endocrine glands, which release them directly into blood, and the bloodstream carries them to their target cells. However, it doesn't necessarily have to be blood, it can be tissue fluid as well. (And not all organisms that have hormones have blood either. In plants for example, hormones can migrate to other cells from the site of production through the plasmodesmata that connect neighboring cells.)
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How do circulating hormones differ from paracrines and autocrines with reference to their target cells?
Paracrines are a group of local hormones that work on nearby cells. Autocrines stimulate the same cell and circulating hormones can travel long distances to stimulate cells. Hormones only stimulate cells that have their specific receptor.
explain why hormones in the bloodstream are able only to affect target cells/organs and not other cells/organs?
Hormones in the bloodstream are able to affect target cells/organs and not other cells/organs because of selective permeability. This means that hormones are only able to pass through the cell membrane of certain cells and organs, and not through the cell membrane of other cells and organs. The cell membrane of the target cells and organs are specialized to allow the hormones to pass through, while the cell membrane of other cells and organs are not specialized and are therefore impermeable to the hormones. This is due to the presence of receptor proteins on the cell membrane of the target cells and organs. These receptor proteins can bind to the hormones and facilitate their entry into the cell. Since these receptor proteins are not present on the cell membrane of other cells and organs, the hormones are unable to bind to them and therefore unable to cross the cell membrane. In addition, hormones can be broken down by enzymes in the bloodstream, which means they can’t reach their target cells and organs if they are exposed to the enzymes. This further ensures that hormones only affect the target cells and organs, and not other cells and organs. In summary, hormones in the bloodstream are able to affect target cells and organs and not other cells and organs because of selective permeability and the presence of receptor proteins on the cell membrane of the target cells and organs. Other cells and organs do not have these specialized receptor proteins and therefore cannot be affected by the hormones.
Hormones are usually transported through and affect only cells with?
specific hormone receptors on their surface, allowing for targeted signaling. This ensures that hormones act only on cells that are equipped to respond to their specific signals, optimizing the cellular response to hormonal stimuli and maintaining proper physiological balance.
How do hormones travel to their targets in animal cells and in plant cells.?
In animal cells, hormones travel through the bloodstream, which acts as a transport system to carry hormones to their target cells. Hormones in plant cells, on the other hand, can travel through vascular tissues such as xylem and phloem, or they can move through the air as volatile compounds. Once hormones reach their target cells, they bind to specific receptors on the cell membrane or inside the cell, initiating a signaling cascade that leads to a physiological response.
Hormones affect specific tissues called?
Hormones affect specific tissues called target tissues or target cells. These tissues have receptors that bind to hormones, triggering a response or change in cellular activity.
What type of cells are hormones?
Hormones are not cells but chemicals released by cells to affect changes in other cells.
How do endocrine glands communicate with cells?
endocrine glands secrete hormones into the bloodstream and these hormones reach cells and impact these cells.
Why don't hormones affect all cells of the body?
Cause its hormones!
How do circulating hormones differ from paracrines and autocrines with reference to their target cells?
Paracrines are a group of local hormones that work on nearby cells. Autocrines stimulate the same cell and circulating hormones can travel long distances to stimulate cells. Hormones only stimulate cells that have their specific receptor.
explain why hormones in the bloodstream are able only to affect target cells/organs and not other cells/organs?
Hormones in the bloodstream are able to affect target cells/organs and not other cells/organs because of selective permeability. This means that hormones are only able to pass through the cell membrane of certain cells and organs, and not through the cell membrane of other cells and organs. The cell membrane of the target cells and organs are specialized to allow the hormones to pass through, while the cell membrane of other cells and organs are not specialized and are therefore impermeable to the hormones. This is due to the presence of receptor proteins on the cell membrane of the target cells and organs. These receptor proteins can bind to the hormones and facilitate their entry into the cell. Since these receptor proteins are not present on the cell membrane of other cells and organs, the hormones are unable to bind to them and therefore unable to cross the cell membrane. In addition, hormones can be broken down by enzymes in the bloodstream, which means they can’t reach their target cells and organs if they are exposed to the enzymes. This further ensures that hormones only affect the target cells and organs, and not other cells and organs. In summary, hormones in the bloodstream are able to affect target cells and organs and not other cells and organs because of selective permeability and the presence of receptor proteins on the cell membrane of the target cells and organs. Other cells and organs do not have these specialized receptor proteins and therefore cannot be affected by the hormones.
What is a chemicals travel through the bloodstream and affect the activities of other cells?
I suppose that you think to oxygen.Oxygen is indispensable for life.
The signaling chemicals produced by one group of cells that affect distant target cells are called?
hormones.
Chemicals that travel through the bloodstream and affect the activities of other cells?
Hormones
Hormones are usually transported through and affect only cells with?
specific hormone receptors on their surface, allowing for targeted signaling. This ensures that hormones act only on cells that are equipped to respond to their specific signals, optimizing the cellular response to hormonal stimuli and maintaining proper physiological balance.
Can the endocrine system affect cells?
Yes, the endocrine system can affect cells. By secreting hormones into the bloodstream, the endocrine system sends chemical messengers to cells that alter their function.
How do hormonens reach the cells they affect?
With the blood stream
How do you some hormones affect only certain cells in the body but not others?
These cells have specific types of receptors on their membranes.
