All categories

3 years ago

Sequence the events of a spinal reflex

Biology

1 answer:

Nuetrik [128]3 years ago

6 0

Spinal reflex refers to a reflex, which is directed by a nerve pathway with a sensory afferent to the spinal cord, linkages within the cord, and an efferent to muscle from the cord. The spinal reflexes take place in the absence of the influence of the brain.

The following is the correct sequence of events of a spinal reflex:

1. Something stimulates a sense, like heat, pain, or smell.

2. The sensory receptors produce nerve signals, which travel along the sensory fibers via the dorsal-root ganglia towards the spinal cord.

3. The posterior neurons conduct signals on to interneurons, some of which synapse with the motor neurons.

4. The nerve signals travel to an effector-like a muscle that brings about a response.

You might be interested in

The Amish population who migrated from Europe to the United States had very few individuals in their population. Additionally, t

kifflom [539]

The Amish have a genetic trait called polydactyly which is rare among other populations of people. This means that a person can 6 fingers, usually an extra thumb. This kind of evolutionary effect that is exhibited in this specific example is called the Founder effect. This happens when there is a small number of colonizing ancestors.

8 0

3 years ago

Read 2 more answers

What are the five steps within the lifecycle of a typical virus?

pickupchik [31]

Attachment, penetration,uncoating,biosynthesis, maturation and release

7 0

3 years ago

FILL IN THE SPACES/Word Bank -->

iren [92.7K]

Answer:

air pressure can be measured I Barometer

humidity is hygrometer

6 0

3 years ago

Which statement is NOT true about mitosis?

AysviL [449]

A because mitosis divides other contents other than just nuclear contents

4 0

4 years ago

In the seawolf (a rare hypothetical animal), the dominant allele R causes solid tail color, and the recessive allele r results i

Ratling [72]

Answer:

The most likely genotype of the male parent is RrBbmm.

Explanation:

First of all, we have 3 genes and 6 alleles:

For color pattern:

- RR or Rr: Solid tail color

- rr: Spotted tail

For coat color:

- BB or Bb: Black coat color

- bb: Brown color

Expression of gene B/b depends on M:

- MM or Mm: B/b is expresed.

- mm: B/b is not expresed, yellow coat.

So, a cross between a solid yellow-tailed male and a solid brown-tailed female was made, and the offspring was:

- 6 solid yellow

- 2 spotted yellow

- 3 solid black

- 1 spotted black

- 3 solid brown

- 1 spotted brown

Total: 16

If it was produced all possible phenotypes, it means that parents have to be carriers of R/r, B/b, and M/m alleles. Male parent is yellow, so he has to be mm for this gene, but for the two other alleles he should be heterozygous:

RrBbmm

And female parent is solid brown-tailed, so she has M allele, (probably heterozygous), and Rr and bb (color brown),, like this:

RrbbMm

When these two genotypes are crossed, 8 gametes are generated for each parent, and 64 possible combinations. This cross in the attached Punnett Square.

As a result, the phenotypicial ratios are in the attached table and they are the same as the reported in the question:

Punnett Square

- 24 (6) solid yellow

- 8 (2) spotted yellow

- 12 (3) solid black

- 4 (1) spotted black

- 12 (3) solid brown

- 4 (1) spotted brown

Total: 64

7 0

4 years ago