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Why target cell respond to the hormone while others are uneffected?
Target cells respond to hormones because they have specific receptors for the hormone on their cell membrane or inside the cell. These receptors enable the hormone to bind and initiate a cellular response. Other cells that do not have the specific receptors for that hormone are unaffected because they cannot bind to the hormone or activate the necessary signaling pathways.
What cell determine cell activities?
The binding of a hormone to a receptor is the first step. Target cell activation by hormone-receptor interaction depends equally on 3 factors. First the blood levels of the hormone, second ,relative numbers of receptors for that hormone on or in the target cells and the third ,strength of the binding between the hormone cell and the receptors.
Which hormone has intracellular receptors?
cortisol
How does a nonsteroid hormone act on its target cells?
They bond to receptor sites on their target cells to facilitate some reaction, depending on the hormone. For example, insulin is a protein hormone that bonds on receptor sites on muscle cells to allow the diffusion of glucose into the muscle cell. Without insulin, the cell membrane is impermeable to glucose, but the insulin bridge made when the hormone bonds with receptors on the muscle cell membrane allows for the glucose to pass through. This is called facilitated diffusion.
Structures that have receptors for a particular hormone are called?
Target organs
Where are hormone receptors for non- steroid hormone located?
where are receptors for non-steroid hormones located
Target cells for a given hormone have the correct?
receptors
What are structures that have receptors for a particular hormone called?
target cells
Which hormone affect only certain cells?
Because they only activate target cells that have special receptors that only work when that specific hormone attaches to it.
How do hormones send messages?
The cells that react to a given hormone have special receptors for that hormone. When a hormone attaches to the receptor protein a mechanism for signaling is activated.
Does up-regulation involve the loss of receptors and prevents the target cells from overreacting to persistently high hormone levels?
I think is down-regulation because a decrease in receptors will occur so less hormone can bind the cell.
Suppose a hormone is released by an endocrine gland The hormone is carried by the bloodstream to its target cells When it reaches the cells the hormone binds to receptors on the cells' surfaces?
The receptor changes shape and activates a chain reaction that leads to the cell changing its activities.
Why target cell respond to the hormone while others are uneffected?
Target cells respond to hormones because they have specific receptors for the hormone on their cell membrane or inside the cell. These receptors enable the hormone to bind and initiate a cellular response. Other cells that do not have the specific receptors for that hormone are unaffected because they cannot bind to the hormone or activate the necessary signaling pathways.
Where in cells are insulin receptors located?
plasma membrane
What are target cells.?
In your body, you have certain cells that can receive and process hormones released by your pituitary gland, hypothalamus and other endocrine glands. However, not all cells can receive all hormones. Target cells are cells that have receptors on them for a specific hormone. So a target cell may have a receptor for GH hormone, thus allowing GH to be absorbed by only the target cells with GH receptors.
What cell determine cell activities?
The binding of a hormone to a receptor is the first step. Target cell activation by hormone-receptor interaction depends equally on 3 factors. First the blood levels of the hormone, second ,relative numbers of receptors for that hormone on or in the target cells and the third ,strength of the binding between the hormone cell and the receptors.
How does a hormone identify its target?
Only target cells have receptors inside cytoplazm (for steroid hormones) or on cell membrane (for protein hormones) that make the hormone active.
