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Law Incorporation [45]
3 years ago
12

What blood vessels contain valves?

Biology
2 answers:
yaroslaw [1]3 years ago
4 0

Veins contain valves that ensure blood flows in only one direction. Valves also help blood travel back to the heart against the force of gravity.




Hope this helps.....

Andre45 [30]3 years ago
3 0

veins and capilliaries contain valves.

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Hypoparathyroidism may be caused by: a. Problems following surgery, an autoimmune disorder, or congenital defects b. Heavy expos
Wewaii [24]

Answer:

The correct answer is option A

Explanation:

Hypoparaghyroidism occurs when thyroid gland produce little parathyroid hormone.

This is caused by:

1. Injury to the parathyroid glands during thyroid and neck surgery.

2. It is also caused by auto immune disorder. This is as a result when the body's natural defence against invading organisms starts to attack perfectly healthy tissues.

3. Congenital defects: This is as a result when infants are born without parathyroid tissue, that is ability to make thyroid glands or when the mother has hypoparathyroidism.

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4 years ago
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svetlana [45]

Answer:

hope it helps...

Explanation:

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3 years ago
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Gnoma [55]

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3 years ago
Mariah has brain damage in the left frontal lobe of her brain. when she tries to speak, she struggles to produce words and is un
ANTONII [103]
The correct answer is Broca's area. This is because Broca's area is the part in the cerebral cortex, specifically in the temporal lobe (not in the frontal lobe), and is responsible for producing language. Damage in the Broca's area will render the patient unable to speak words correctly and this is called expressive aphasia. The Wenicke's area on the other hand is also located in the temporal lobe and is responsible for interpreting language. Damage in the Wernicke's area will make all words to the patient non-understandable even when he can hear the words correctly and this is called receptive aphasia. Occam's area and Morton's area are not parts of the brain and does not exist.

Nice to know: There is a nerve tract that connects Broca's area to Wernicke's area called the arcuate fasciculus. Damage to the arcuate fasciculus will render the patient unable to repeat words. 
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