Answer: Hemostasis includes three steps that occur in a rapid sequence:
Explanation: 1) vascular spasm, or vasoconstriction, a brief and intense contraction of blood vessels; (2) formation of a platelet plug; and (3) blood clotting or coagulation, which reinforces the platelet plug with fibrin mesh that acts as a glue to hold the clot.
or:
The Blood Clotting Process
Injury. A small tear in a blood vessel wall (for example, from a cut on the skin or an internal injury) causes bleeding.
Vessel constriction. To control blood loss the blood vessel narrows (called constriction), thus limiting blood flow through the vessel.
Platelet plug. ...
Fibrin clot.
b. Check for a mistake in recording the data
c. Run the experiment again to verify the accuracy of the original data.
Thier DNA sequences
The correct answer is endocrine system.
Endocrine system in vertebrates consists of endocrine glands. Endocrine glands do not have ducts thus, they are also called as ductless glands. The glands which secretes enzymes are glands with duct, called exocrine glands. Therefore, the hormones secreted from endocrine glands are directly poured into the blood for the action on target organs. Examples of endocrine glands are pituitary gland, thyroid gland, adrenal gland.