All categories

3 years ago

Axons cross from one side of the spinal cord to the other through the

Biology

1 answer:

Airida [17]3 years ago

7 0

<h2>Axons </h2>

Explanation:

Axons cross from one side of the spinal cord to the other through the gray commisure

Each arm or extension of the gray matter in the spinal cord is referred to as a horn
Projecting towards the back of the spinal cord are the dorsal horns (or posterior horns)
Projecting towards the front are the ventral horns (or anterior horns)
In the thoracic and upper lumbar regions of the cord, an additional pair of side projections occur, which are called the lateral horns
A narrow band of gray matter known as the gray commissure stretches across of the center of the spinal cord and connects the two sets of horns
In the middle of the gray commissure is the central canal, which contains cerebral spinal fluid

You might be interested in

You are an almond grower and want to determine whether almond size (measured as shelled almond weight) is a heritable trait. A s

inn [45]

Answer: 1. S = 0.77

2. R = 0.14

Explanation:

1. Selection differential is the difference between the population mean and the average of the selected parents. Its symbol is S.

S = mean of selected parents - population mean

S = 6.48 - 5.71

S = 0.77

2. Response to Selection is how much gain you make when crossing over selected parents. Its symbol is R.

R = mean of offspring of selected parents - population mean

R = 5.85 - 5.71

R = 0.14

3. Heritability is, basically, a statistical variable that shows how much the variation in a trait is due to genetic factors. Its symbol is h².

To calculate it, use Breeder's Equation:

R = h²S

$h^{2}=\frac{R}{S}$

$h^{2}=\frac{0.14}{0.77}$

h² = 0.18

4. You would expect the production to be strongly influenced by environment, because heritability lies between 0 and 1. Low heritability means there is low level of resemblance between offspring and parents. As this program heritability is low, the resemblance is small, which means the characteristics are influenced mostly by the enviroment.

7 0

3 years ago

Showing change in the composition of a population's gene pool demonstrates that evolution has occurred.

Anna11 [10]

A. true, evolution does occur

8 0

3 years ago

3. What happens to the energy that is consumed by any level in an energy pyramid?

beks73 [17]

Answer:

The amount of energy at each trophic level decreases as it moves through an ecosystem. As little as 10 percent of the energy at any trophic level is transferred to the next level; the rest is lost largely through metabolic processes as heat.

Explanation:

4 0

3 years ago

Cell structures that plant and animal cells don't share are _____.

liubo4ka [24]

Answer:

a cell wall (because a plant cell is less rigid than an animal cell)

- a large central vacuole (where plant cells store water)

- chloroplasts (which plants use to carry out photosynthesis)

Explanation:

8 0

3 years ago

Positive feedback

choli [55]

Answer:

Explanation:

"Positive feedback encourages and intensifies a change in the body's physiological condition, driving it farther out if the normal range."

4 0

3 years ago