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Bingel [31]
3 years ago
13

Are there blood vessels in the cornea

Biology
2 answers:
Blizzard [7]3 years ago
8 0

Unlike most tissues in the body, the cornea contains no blood vessels to nourish or protect it against infection. Instead, the cornea receives its nourishment from tears and the aqueous humor (a fluid in the front part of the eye that lies behind the cornea).


<h2>so your answer is <em><u>no</u></em></h2><h2><em><u /></em></h2><h2><em><u>can i get brainlest</u></em></h2>
Hunter-Best [27]3 years ago
4 0

No. The cornea is one of teh few places in your body without a blood vessels.

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Fofino [41]

Answer:

1st graph/diagram --> 2nd description (between top and bottom)

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4 0
3 years ago
What unique characteristic do all deuterostomes have in common???
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4 years ago
How do the thyroid and parathyroid from a feedback loop?
shtirl [24]

Explanation:

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Further Explanation:

During homeostasis the body maintains a constant internal balance in pH, temperature, blood pressure etc. Cells in a multicellular organism become specialized for particular tasks and communicate with one another in order to maintain homeostasis. Within the human body these are known as hormone cascades, where several complex steps occur- the tissues signal to one another with the use of hormones released by the endocrine system. The regulation (increase and decrease) of these secretions is achieved by negative feedback loops, where the release of certain substances during a cascade in turn halts the secretion of hormones at earlier stages.

In the body calcium homeostasis, which is generally defined as the maintenance of specific internal conditions, is mediated by the endocrine system through hormonal control. This regulates the calcium flux between the bloodstream and the bone; and the hormones responsible, change the ratio of osteoclast activity to osteoblast activity -osteoblasts build bone while osteoclasts breakdown or degrade bone.

Hormones responsible include calcitonin (from special parafollicular cells in the thyroid gland), calcitriol (activated vitamin D) and the parathyroid hormone (from the  parathyroid glands).  These affect the absorption of calcium from the gut, or kidney reabsorption; both parathyroid hormone and calcitriol act by causing the increase of calcium ions into the bloodstream as the bone is degraded by osteoclasts.

Learn more about tissue types at brainly.com/question/8487952

Learn more about homeostasis at brainly.com/question/1601808

#LearnWithBrainly

6 0
4 years ago
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aalyn [17]

non-metals gain electron and metals lose electrons,

 

<span>Iron is a metal, so when it reacts it loses an electron becomes a cation and form ionic bonds. Hydrogen is a non-metal, it gains an electron when reacting and forms covalent bonds or ionic bonds.</span>
7 0
4 years ago
Two linages stemming from the same branch are known as?
Romashka-Z-Leto [24]

Answer:

sister taxa

Explanation:

4 0
3 years ago
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