Extracellular signaling in animals is carried out by?
جانوروں میں ایکسٹرا سیلولر سگنلنگ کیا جاتا ہے؟
- Autocrine signaling
- Endocrine signaling
- Juxtacrine signaling
- All of the above
Explanation
Extracellular signaling in animals can be carried out by:
- Endocrine signaling: This involves the release of hormones into the bloodstream, which then travel to reach distant target cells. Examples include insulin and adrenaline.
- Paracrine signaling: This involves the release of signaling molecules into the extracellular space, which then diffuse to nearby target cells. Examples include histamine and prostaglandins.
- Autocrine signaling: This involves the release of signaling molecules that bind to receptors on the same cell that produced them. Examples include autocrine growth factors.
- Juxtacrine signaling: This involves the release of signaling molecules that bind to receptors on adjacent cells. Examples include signaling through cell-cell contacts.
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