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inn [45]
2 years ago
11

How have hominid skulls changed over time? What are some of the reasons for those changes?

Biology
2 answers:
liberstina [14]2 years ago
7 0

Answer:

The change from the oblong skull and protruding face of ancient humans (right) to the modern rounder skull and retracted face is associated with a sharper bend in the floor of the brain case (lower left), thought to be caused by increased brain size.

Explanation:

Give brainlist me please

erma4kov [3.2K]2 years ago
4 0
<h2><u><em>Skull and face changes define modern humans - Harvard Gazette</em></u></h2>

The change from the oblong skull and protruding face of ancient humans (right) to the modern rounder skull and retracted face is associated with a sharper bend in the floor of the brain case (lower left), thought to be caused by increased brain size.

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During day light, the secretion of melatonin or sleep hormone is suppress by melanopsin that keeps people awake and alert. Nevertheless, during nighttime, melanopsin stimulates the release of melatonin to signal sleeping time. Therefore, this hormone works the entire day and has direct effect on the circadian rhythm, which acts as a regulator of our biological clock.

 

 


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agonists generally _______ activity at the synapse while antagonists generally ______ activity at the synapse.
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Agonists activate the receptor thereby <u>increasing</u> activity at the synapse while antagonists generally prevent agonists from activating the receptors thereby <u>decreasing</u> activity at the synapse.

  • An agonist is the component that has the ability to increase the activity carried out by another substance.

  • The agonists work from their faculty of coupling to a cell-type receptor, in this way, they manage to generate a certain action in the cell.

  • The antagonists are the compounds that cause the opposite when they bind to the receptor, they cause a blockade by decreasing the activation of a synaptic receptor.

Therefore, we can conclude that agonists are compounds capable of increasing the action of synapse and blockers (antagonists) decrease activity at the synapse.

Learn more here: brainly.com/question/11985070

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