All categories

2 years ago

In a cephalized invertebrate, the system that transmits "efferent" impulses from the anterior ganglion to distal segments is the

1 answer:

6 0

The peripheral nervous system is the mechanism in a cephalized invertebrate that sends "efferent" impulses from the anterior ganglia to distant segments.

<h3>What is the peripheral nervous system?</h3>

The peripheral nervous system (PNS), together with the central nervous system (CNS), is one of two parts that make up an animal's nervous system (CNS). Outside of the brain and spinal cord, the PNS comprises of the nerves and ganglia.

The primary job of the PNS is to convey information between the brain and spinal cord and the rest of the body via connecting the CNS to the limbs and organs. The PNS, unlike the CNS, is not shielded by the skull, spinal column, or blood-brain barrier, leaving it vulnerable to poisons and mechanical harm.

In a cephalized invertebrate, the peripheral nervous system is the mechanism that transmits "efferent" impulses from the anterior ganglia to remote parts.

The right answer is B.

To know more about peripheral nervous system, refer:

brainly.com/question/1621826

#SPJ4

You might be interested in

Which one of the following agricultural activities would most likely

joja [24]

Plowing fields before planting

This makes the soil weakened before the plants even grow.

3 0

3 years ago

Read 2 more answers

A student runs 5 kilometers (km) each afternoon at a slow, leisurely pace. One day, she runs 2 km as fast as she can. Afterward,

natka813 [3]

Answer:

The correct answer is lactic acid.

Explanation:

Lactic acid comes from the breakdown of glucose when there is no oxygen present (glycolytic metabolism), that is, in an anaerobic exercise such as lifting weights or running at high speed, like our student in the question, where there is a lot of intensity and short duration. Under normal conditions that lactic acid and when we are trained it is reused and there is no problem.

But when we continue with intensity an exercise, lactic acid will begin to accumulate by not giving the body time to remove it. This causes high concentration of lactic acid in the muscle fibers, which has two important consequences:

1. The enzymes responsible for breaking the glucose molecule to obtain energy are inhibited, so the energy grind of this path is cut off and as we know, if there is no energy, there is no movement.

2. It prevents calcium from joining the muscle fibers and consequently from contraction. Therefore, when there is a lot of lactic acid in the body, we have neither energy nor capacity to contract the muscles, this is nothing but fatigue and the best we can do is stop the exercise or activity. That's our recommendation to our student after running 2 km as fast as she could.

8 0

3 years ago

Despite the best efforts of scientists to create an all-encompassing system of names for relationships between organisms, some s

IRINA_888 [86]

Answer:

Wasps only use the caterpillars when producing offspring which kills the caterpillars.

Explanation:

'True parasites' are generally defined as organisms which live off 'host' organisms of another species at the expense of that organism by harming them in some way. They do this in a variety of ways for different reasons, the most common ones being as a source of food or favorable living conditions. Their lives are almost always entirely dependent on their host. Conventional parasites also usually don't kill their hosts as it is in their best interest that their host stays alive for them to gain the most advantage from them.

Wasps do not fit the true definition of a parasite because:

1. They don't rely on living off the caterpillars to live normally. Wasps are able to find their own sources of food and live on their own without other species. It is only when reproducing that they use and harm the caterpillars.

2. This process kills the caterpillars as the wasp larvae eat them when they emerge and grow which is unconventional for parasites.

It is because of these exceptions that these wasps are classified as 'parasitoids' and not conventional parasites.

Note: Wasps like these have been introduced many times because of this symbiotic relationship they have to help control caterpillar populations.

Hope this helped!

8 0

3 years ago

Read 2 more answers

b) Describe two measures each to conserve natural vegetation and wildlife, Class 8 - Geography - Unit 1 betwen 90to100 words

maxonik [38]

Answer:

Afforestation and national sanctuaries are two measures each to conserve natural vegetation and wildlife.

Explanation:

The natural vegetation and wildlife restoration is one of the main concerns that are essential for the development and growth of a country's biodiversity. Due to human land-use changes and migration of people, from one place to another with their cattle, lands are becoming deserted and grassland and forest land are declining.

So, we need to plant more trees that act as the natural habitat for the wildlife and preserve and conserve them in parks and sanctuaries which will help reduce the impacts of global warming and climate change.

We should not kill any animal.

We should decrease the use of plastics.

4 0

3 years ago

Can you please answer the following? The "job" is a tundra biologist!

siniylev [52]

A tundra biologist would make sure that the area of tundra they are working on stays healthy by checking plant and animal life for signs of harm or pollution. Wake up, get ready, drive to work location, observe wildlife, collect samples, answer questions for public, write papers on how to reduce pollution or harm to tundra animals and why the animals have their uses. Its important because it improves our environment for future generations. Hope this helps :D

5 0

4 years ago