Melanosis is any condition of unusual deposits of black pigment in body tissues or organs. Therefore, your correct answer would be letter choice A provided.
<h3><u>Answer;</u></h3>
Instantly transmitted
All of the information your brain receives is <em><u>instantly transmitted</u></em>.
<h3><u>Explanation;</u></h3>
- <em><u>Brain is the part of the central nervous system</u></em> together with the spinal cord.
- <em><u>Brain receives from sensory neurons, which carry stimulus, which are the changes in the environment, from the receptors for processing and interpretation.</u></em>
- <em><u>Brain inter-prates and process information it has received instantly and sends a response via the motor neurons, which carries the responses to the effector cells such as glands and muscles which trigger various actions.</u></em>
The right answer is: voltage-gated channels
Ionic channels are membrane proteins that allow the selective passage of the cell membrane by ions (Na +, Ca2 +, K +, Cl-, ...) following the electrochemical gradients. They play a vital role in cellular excitability, triggering and propagation of action potential. They intervene in the coupling excitation-contraction and excitation-secretion. Ion channel selectivity is based on the adequacy of ion size and charges with the structure and amino acid sequence of the channels.
Among these channels, there are voltage-gated channels.
These are ion channels whose opening is activated by the membrane potential.
These dependent volumetric channels are characterized:
- by the selectivity of the ions (Ca2 +, Na +, K +, Cl-, ...)
- by their conductance
- by their activation domain (significant depolarization to low)
- by their kinetics of inactivation (slow, fast or transient)
Answer:
A. Rivers
Explanation:
because most of the water comes from two big rivers
I do believe it is a negative feedback loop.
