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Andrew [12]
3 years ago
15

HELPPPPPPP!!

Biology
1 answer:
Phoenix [80]3 years ago
3 0

Answer:

B

Explanation:

Arteries and arterioles (small arteries) have muscular walls. They're the main blood vessels involved in vasoconstriction. ... Capillaries are tiny, thin-walled blood vessels that can't constrict.

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Why do some offspring look like their parents, while others do not?
castortr0y [4]
Some offsprings look like their parents because we all have different genes. Different combinations of genes for one of these traits create a bunch of different physical attributes. Even though we get all our DNA from our parents, each of us has a unique combination of genes.
3 0
3 years ago
Bundles of axons in the central nervous system are called
Karolina [17]

Answer: Bundles of axons in the central nervous system are called a "tract"

Explanation:

Axons(nerve fiber) consist of long slender projection of neurons or nerve cells that conduct and transmit impulses away from the neuron or nerve cell body. Axons are surrounded by endoneurium layer which contain protein fluid that surround each axon.

Bundles of axon in the CNS is known as tract. We have ascending tracts and descending tracts. The ascending tracts function are to conduct and carry impulses along the spinal cord to the brain while the descending tracts transmit and carry the impulses from the brain to lower regions (downward) of the body. Tracts are identified by their origin (where the bundle start) and also the end/termination of axon bundle.

The largest tracts are fasciculi gracilis and cuneatus which are known as ascending tracts.

7 0
3 years ago
Which of the following is on the anterior side of the hand and wrist?
nirvana33 [79]

Answer:

it's d. Flexor carpi radialis

Explanation:

The other three are on the Posterior side. Extensor carpi ulnas should also be spelled ( Extensor carpi ulnaRIs )

5 0
3 years ago
Read 2 more answers
A gene for the MN blood group has codominant alleles M and N. If both children are of blood type M, which of the following is po
fgiga [73]

Answer:

The correct answer would be "Each parent is either M or MN".  

Co-dominance is the condition in which both the alleles express themselves completely when present in the heterozygous condition.

The blood group of the offspring can be of M type in two conditions:

1. When both the parents are of M blood group  

2. When both the parents are heterozygous for the blood group that is, they both are MN.

5 0
3 years ago
A species of rodent lives in a moist forest
bazaltina [42]

It would be D. being able to eat plants that survive in the changed environment

Hope this helps :))

7 0
2 years ago
Read 2 more answers
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