Answer:
Pallor is caused by vasoconstriction of the dermal blood vessels
Explanation:
Pallor is paleness or wanness usually caused by vasoconstriction of the dermal blood vessels.
In other words. A deficiency in the color of the face.
They breathe through their lungs while moving their throat or rib cage. Some reptiles can hold their breath for hours by simply not moving.
Explanation:
Distance = 826m
time = 70second
velocity = distance/ time
v = 826/70
v = 11.8m/sec
Answer:
Animal Cell
Explanation:
If you search up animal cell diagram, it should come up ano there’s differnet angles of the cell to choose from but most of them come with the labels.!
Histamine inhibits the chemotaxis which is the movement of cells along the gradient.
Histamine:
It is a neurotransmitter that is released by the mast cells in response to an allergen that causes an allergic reaction. It is responsible for redness of the inflamed area, heating, movement of leukocytes, and defense proteins to the site of injury. Histamine is responsible for vasodilation and increased permeability. The immune cells move to the site of injury and cause the flow of blood to the injured site. It plays an important role in allergic and hypersensitivity reactions. Histamine is also responsible for gastric secretion, smooth muscle contraction, and itching.
Learn more about histamine here:
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