Answer:
The opening of voltage-gated sodium channels
Explanation:
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Depolarization occurs when sodium ions move across the cardiac cell membranes generating a change in charges and therefore the depolarization.
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Answer:
The correct answer is A)C02.
Explanation:
The Calvin cycle is a biochemical process that takes place in photosynthesis (more precisely in the stroma of chloroplasts). It is a stage of the same, which does not depend on light, allowing the fixation of CO2, using the enzyme RUBISCO.
PATHWAY (ROUTE) TAKEN BY CO2:
blood(within capillary) >wall of capillary >wall of alveolar >moisture lining >alveolar space >bronchiole >bronchus >trachea >nose
PATHWAY (ROUTE) TAKEN BY O2:
nose >trachea >bronchus >bronchiole >alveolar space >moisture lining >wall of alveolar >wall of capillary >blood(within capillary)
Neurons in the <u>spinal cord</u>, control motor reflexes, which allows rhythmic and automatic movements to be carried out.
The spinal cord represents the lowest level in the hierarchical system that regulates reflex motor activity, voluntary movements, and body posture.
Therefore, their neurons have been organized into circuits that participate in simple automatic gait movements and simple defensive movements (withdrawal of the muscle in the event of any aggression) through reflex responses.
The motor neurons of these circuits are located in the anterior horns where they are arranged forming the so-called "poles" of motor neurons, equivalent to true motor neuron nuclei.
- Alpha motor neurons their axons are myelinated and they group together in the medulla and form columns that are known as motor nuclei.
- Gamma (γ) motor neurons innervate muscle fibers of the muscle spindle.
- Interneurons can be excitatory or inhibitory.
Therefore, we can conclude that neurons in the spinal cord, control motor reflexes, they present functional interactions between them and this allows rhythmic and automatic movements to be carried out with ease through reflex responses.
Learn more here: brainly.com/question/3597766
Answer:
A, the sun.
Explanation:
The sun powers the water cycle and many others.
