Answer: Autonomic nervous system is made up of 3 divisions; Sympathetic nervous system, parasympathetic nervous system and sympathetic division. All these divisions are involuntary actions where parasympathetic is ultimately responsible for the "rest and digest" part of it. When the body is at rest the parasympathetic nervous system inhibits or lowers high energy requiring bodily functions.
This nervous system will lower any fight or flight response actions such as the release of epinephrine into the blood and enable digestion, urination and defeacation. When engaged in digestion you feel relaxed and at rest, this is solely due to the parasympathetic nevous system.
The term ‘Crossing over’ was used by Morgan and Cattell. It is a process in which there is exchange of chromosome segments between non-sister chromatids of a homologous chromosomes. It occurs during pachytene stage of prophase I of meiosis cell division.
Significance of crossing over:
- Crossing over provides genetic variation in all sexually reproducing organisms.
- It creates new combination of genes or genetic recombination and produces hybrids.
Brain stem is the part of the human brain that houses the most primitive functions such as the control of heart rate, respiration, and blood pressure.
<h3>What is brain stem?</h3>
It is a part of the brain that is located between the rest of the brain and the spinal cord.
It is responsible for carrying out the most basic nervous system tasks for our survival, such as the regulation and maintenance of the heart rate and the automatic control of respiration.
Therefore, we can conclude that the brain stem is the part of the human brain that houses the most primitive functions such as the control of heart rate, respiration, and blood pressure.
Learn more about brain stem here: brainly.com/question/17199488
Answer:
Waxes does't contain fatty acids,glycerol and a phosphate group.
Explanation:
Car wax and bee wax contain ester bonds, fatty acids and long chain hydrocarbons but they don't possess fatty acid, glycerol,and a phosphate group.
