Answer:
Joints hold the skeleton together and support movement. There are two ways to categorize joints. The first is by joint function, also referred to as range of motion. The second way to categorize joints is by the material that holds the bones of the joints together; that is an organization of joints by structure.
Explanation:
Hope this helped Mark BRAINLEST!!
Answer:
The correct option is : a. causing threshold to be reached more quickly
Explanation:
Norepinephrine, also known as noradrenalin, is an organic compound, which belongs to the catecholamine family. It acts as a hormone and a neurotransmitter in the brain and the body and also impacts the heart.
It is one of the hormones secreted by the adrenal medulla. Norepinephrine is a part of the fight-or-flight mechanism of the body. It acts by binding to the β-1 receptors and opens the chemical or ligand gated calcium and sodium ion channels. Therefore, <u>it causes the threshold to be reached faster </u>by increasing the rate of depolarization and thus causes heart arrhythmia.
Therefore, <u>Norepinephrine acts on the heart by </u><u>causing threshold to be reached faster.</u>
Any type of extreme stress can cause an increase in leukocyte count, leading in leukocytosis. A burn is more likely to stimulate leukocyte proliferation in order to fight infection, which is a concern when the skin's barrier function is compromised.
<h3>Wha is leukocytosis?</h3>
Leukocytosis means you have a high white blood cell count. This means you have more white blood cells than usual. Leukocytosis is a normal immune response and not always a cause for concern. Most of the time, this means your body is fighting an infection or inflammation.
Causes of leukocytosis -
neutrophils: inflammation and infection.
lymphocytosis: leukemia and viral infections.
monocytosis: cancer and other infections.
eosinophils: parasites and allergies.
To learn more about leukocytosis from the given link
brainly.com/question/7137755
#SPJ4
Answer:
This is achieved because the sodium channels have a refractory period following activation, during which they cannot open again. This ensures that the action potential is propagated in a specific direction along the axon.
