Answer:
Neutrophils help fight infections because they ingest microorganisms and secrete enzymes that destroy them. A neutrophil is a type of white blood cell, a type of granulocyte and a type of phagocyte.
Explanation:
Neutrophils display adhesion glycoproteins on their surface to bind endothelial and subendothelial structures. They move randomly until they find a damaged site. Unless neutrophils are activated, endothelial cells do not tend to adhere. When inflammation mediators (IL-1, FNT) activate endothelial cells, they express P-selectin and E-selectin on the surface. The expression of glycoproteins and L-selectin cause the initial adhesion of the non-stimulated neutrophil to the activated endothelium, slowing it down by rolling it over the endothelium. Activated endothelial cells, opsonized particles, immune complexes, FEC-G, FEC-GM and chemoattractants produce factors that stimulate neutrophil activation. Expressing β2 integrin (endothelium adhesion molecule) Neutrophils expand and form pseudopods. Neutrophil activation also promotes degranulation, superoxide generation, and arachidonate metabolite production.
Answer:
D) Cartilaginous synchondrosis
Explanation:
Cartilaginous synchondrosis is a joint in which the bones are joined to the hyaline cartilage or the hyaline cartilage joins the bones.
The synchondrosis is of two types- the temporary and permanent synchondrosis in which the temporary synchondrosis represents the growth plate or epiphyseal plate of the hyaline cartilage which connects the shaft of the bones to the end of the bone.
The thickness of the epiphyseal plate in the children does not change as the bone lengthens.
Thus, D) Cartilaginous synchondrosis is the correct answer.
Answer:
Enzymes help cells digest food, extract energy from food, and Increases the rate of chemical reactions.
Explanation:
They increase the rate of chemical reactions. Enzymes can be used to break things down, or to make things up.
Without enzymes, reactions in a cell would slow to a halt, to a point where the cell would die.
Answer:
C) hematocrit is highest
Explanation:
The viscosity is the property of the fluid substance related to the flow of the resistance. The flow of the resistance increases when the amount of content in the fluid increases.
The flowing blood contains the water and the other components like the cells and proteins therefore it also exhibit the viscosity.
The viscosity in blood happens when the cells and molecules interact with each other therefore measure of these components indicated about the viscosity of the blood.
The hematocrit is the ratio of the proportion of the red blood cells present in the blood to the total volume of the blood.
The viscosity of blood, therefore, increases when the hematocrit is high and decrease when the hematocrit component is low.
Thus, Option-C is the correct answer.
<span>You should use the two finger technique at the sternum and give 30 chest compressions at a quick pace (100 times/minute pacing). Push hard and push fast is important for CPR.</span>
