What initially causes a nerve impulse

Answers

Answer 1
Answer: Nerve impulses are caused by Potassium (K+) and Sodium (Na+) ions that are located inside and outside of the cell. The structure of the cell membrane is permeable to Potassium but are highly impermeable to Sodium ions. These impulses are transmitted from one nerve cell to the other in very fast series. 
Answer 2
Answer:

Answer is B) The movement of chemicals into the dendrites of the neuron causes a nerve impulse.


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Is a quail warm blooded or cold blooded

Answers

A quail, like most birds, is cold blooded.

Okay I need help and get this question right please

Answers

Answer:

D

Explanation:

A species has to be able to reproduce and produce fertile (able to reproduce themselves) offspring in order to continue living on.

All of the populations of different species live and interact in an area

Answers

Community (from ecology)

The nerves that control voluntary responses like those connected to your muscles are part of the _____ nervous system. A.somatic
B.autonomic
C.sympathetic
D.parasympathetic

Answers

Answer:

The correct answer would be A. somatic nervous system.

A somatic nervous system is sub-set of the peripheral nervous system which controls the voluntary actions and body movements with the help of skeletal muscles.

This system mainly consists of two types of nerves:

Afferent nerves: Theses are sensory nerves which carry stimulus or information from receptors to the central nervous system (brain and spinal cord).

Efferent nerves: These are also termed as motor nerves which carry commands or responsive information from the central nervous system to the muscles.

The muscles contract and produce movements.

What genes control cell differentiation during development?

Answers

The answer to your question is the hox genes which are important for segmentation.

Sweating and panting are examples of which characteristic of life?a. responding to the environment
b. using energy
c. reproducing
d. growing and developing

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The correct answer is option a. responding to the environment.

The sweating is the release of sweat from the sweat glands. The sweating releases the water molecules on the skin surface as a result of increased body temperature due to changes in atmospheric temperature. The water molecule from the skin evaporates causing a decrease in body temperature.

The panting increase in the heat loss by respiration, hence, it is also a respond to the increased atmospheric temperature. So, both the conditions are associated with the temperature increase outside the body, here change in temperature act as stimuli and body react according to change.

A: responding to the environment