Answer: The action of a neurotransmitter at the postsynaptic cell is terminated by the following: enzymatic degradation, diffusion or reuptake into the presynaptic cell by specific transporters.
Explanation: After a neurotransmitter has bound to its receptor on the postsynaptic membrane and triggered a biological response, in order to avoid over stimulation of the receptors, the neurotransmitter is either degraded by specific enzymes or taken back to the presynaptic cell into the synaptic vesicles by action of specific transporters. This mechanism is to maintain a balance (homeostasis).
A: haploid gametes
B: froze assets
sorry, typing while talking doesn't produce good responses
<span>The statement which accurately describes the phases of the menstrual cycle in humans is : B. FSH in the blood is highest during the luteal phase. Keep in mind that when the luteal phase takes place LH from the anterior pituitary gland stimulates the corpus luteum inorder to produce progesterone. The option C, which is suggested above, is incorrect because ovulation occurs at 14th day of the cycle. </span>
Right receptor protein on the surface of the target cell or in cell plasma is required. There are three major types of receptors in cell:
1. Channel receptors- <span>neurotransmitters.</span>
2. Receptor tyrosine kinases-protein expression
3. G protein coupled receptors-<span>detect </span>substances<span> outside the </span>cell
Skeletal and Muscular Systems
