Hemostasis in Medical Physiology

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Hemostasis means prevention of ______ loss

blood

Platelets are also called ______

thrombocytes

Platelets are formed in the bone marrow from ______

megakaryocytes

The normal concentration of platelets in the blood is between 150,000 and 300,000 per ______

microliter Signup and view all the answers

Platelets don’t have ______

nucleus Signup and view all the answers

Platelets have a life span of 8 to 12 days, then removed by the tissue ______ system in spleen

macrophage Signup and view all the answers

When platelets come in contact with a damaged vascular surface, especially with ______ fibers, they immediately change their own characteristics

collagen Signup and view all the answers

Platelets adhere to collagen in the vessel wall and to each other forming the ______

plug Signup and view all the answers

Hemostasis is achieved by several mechanisms: 1. Vascular ______

constriction Signup and view all the answers

Formation of a blood clot as a result of blood ______

coagulation Signup and view all the answers

Vascular constriction results from local ______ spasm

myogenic Signup and view all the answers

Factors released from damaged tissue & platelets contribute to vascular ______

constriction Signup and view all the answers

If the cut in the blood vessel is very small, the cut is often sealed by a platelet plug, rather than by a blood ______

clot Signup and view all the answers

Blood coagulation and formation of blood ______ Factors from damaged tissue, platelets & from blood proteins initiate clotting process.

clot Signup and view all the answers

This process catalyzed by clotting factors & results in the formation of fibrin fibers running in all direction producing a ______ that entrap platelets & blood cells to form the clot.

meshwork Signup and view all the answers

This followed by formation of more fibrous tissue into the blood ______ to close the hole in the vessel permanently.

clot Signup and view all the answers

Fibrinolysis Extra clot and old clot cleaned up by factors that breakdown ______.

clot Signup and view all the answers

Activation of Plasminogen to Form Plasmin, Then Lysis of ______

Clots Signup and view all the answers

The injured tissues and vascular endothelium very slowly release a powerful activator called tissue plasminogen activator(t-PA) that a few days later, after the has stopped the bleeding, eventually converts plasminogen to plasmin, which in turn removes the remaining unnecessary blood .

clot Signup and view all the answers

Patients with bleeding disorders and tendencies require the following investigations: 1. Hess test (capillary resistance test). 2. Platelet count. 3. Bleeding time. 4. ______ time (whole blood coagulation time).

Clotting Signup and view all the answers

Hess test: ∙ With a pencil, mark a circle of 6 cm diameter in the antecubital fossa. ∙ Apply the cuff of the sphygmomanometer 1-2 inches above the circle and raise the pressure of the cuff to 50 mmHg and maintain the pressure for five minutes. ∙ Release the cuff and count the number of petichial hemorrhages (blue dots) on the circle. Counts of 0 – 8 are regarded as normal. ∙ If the test is positive (above 8 dots), this means that the capillary wall is abnormal and weakened by a disease. Bleeding time: is the time required to arrest bleeding from a ruptured ______.

capillary Signup and view all the answers

After cleaning the finger, do a puncture of about 4 mm deep in the thumb. Touch the bleeding site with a filter paper every 30 seconds. ∙ When bleeding is stopped count the number of spots formed on the paper and then divide it by two. ∙ This will give the bleeding time in ______.

minutes Signup and view all the answers

This method gives information about the function of the platelets and the ______ wall.

capillary Signup and view all the answers

This is the time taken for the blood to ______ out side the vascular system.

clot Signup and view all the answers

Hemostasis in Medical Physiology

Choose a study mode

Podcast

Questions and Answers

Hemostasis means prevention of ______ loss

Platelets are also called ______

Platelets are formed in the bone marrow from ______

The normal concentration of platelets in the blood is between 150,000 and 300,000 per ______

Platelets don’t have ______

Platelets have a life span of 8 to 12 days, then removed by the tissue ______ system in spleen

When platelets come in contact with a damaged vascular surface, especially with ______ fibers, they immediately change their own characteristics

Platelets adhere to collagen in the vessel wall and to each other forming the ______

Hemostasis is achieved by several mechanisms: 1. Vascular ______

Formation of a blood clot as a result of blood ______

Vascular constriction results from local ______ spasm

Factors released from damaged tissue & platelets contribute to vascular ______

If the cut in the blood vessel is very small, the cut is often sealed by a platelet plug, rather than by a blood ______

Blood coagulation and formation of blood ______ Factors from damaged tissue, platelets & from blood proteins initiate clotting process.

This process catalyzed by clotting factors & results in the formation of fibrin fibers running in all direction producing a ______ that entrap platelets & blood cells to form the clot.

This followed by formation of more fibrous tissue into the blood ______ to close the hole in the vessel permanently.

Fibrinolysis Extra clot and old clot cleaned up by factors that breakdown ______.

Activation of Plasminogen to Form Plasmin, Then Lysis of ______

The injured tissues and vascular endothelium very slowly release a powerful activator called tissue plasminogen activator(t-PA) that a few days later, after the has stopped the bleeding, eventually converts plasminogen to plasmin, which in turn removes the remaining unnecessary blood .

Patients with bleeding disorders and tendencies require the following investigations: 1. Hess test (capillary resistance test). 2. Platelet count. 3. Bleeding time. 4. ______ time (whole blood coagulation time).

After cleaning the finger, do a puncture of about 4 mm deep in the thumb. Touch the bleeding site with a filter paper every 30 seconds. ∙ When bleeding is stopped count the number of spots formed on the paper and then divide it by two. ∙ This will give the bleeding time in ______.

This method gives information about the function of the platelets and the ______ wall.

This is the time taken for the blood to ______ out side the vascular system.

More Like This

Hemostasis and Blood Clotting Mechanisms

Hemostasis Mechanisms Quiz

Coagulation Process in Hemostasis

Blood Physiology and Hemostasis Quiz

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Hemostasis in Medical Physiology

Choose a study mode

Podcast

Questions and Answers

Hemostasis means prevention of ______ loss

Platelets are also called ______

Platelets are formed in the bone marrow from ______

The normal concentration of platelets in the blood is between 150,000 and 300,000 per ______

Platelets don’t have ______

Platelets have a life span of 8 to 12 days, then removed by the tissue ______ system in spleen

When platelets come in contact with a damaged vascular surface, especially with ______ fibers, they immediately change their own characteristics

Platelets adhere to collagen in the vessel wall and to each other forming the ______

Hemostasis is achieved by several mechanisms: 1. Vascular ______

Formation of a blood clot as a result of blood ______

Vascular constriction results from local ______ spasm

Factors released from damaged tissue & platelets contribute to vascular ______

If the cut in the blood vessel is very small, the cut is often sealed by a platelet plug, rather than by a blood ______

Blood coagulation and formation of blood ______ Factors from damaged tissue, platelets & from blood proteins initiate clotting process.

This process catalyzed by clotting factors & results in the formation of fibrin fibers running in all direction producing a ______ that entrap platelets & blood cells to form the clot.

This followed by formation of more fibrous tissue into the blood ______ to close the hole in the vessel permanently.

Fibrinolysis Extra clot and old clot cleaned up by factors that breakdown ______.

Activation of Plasminogen to Form Plasmin, Then Lysis of ______

The injured tissues and vascular endothelium very slowly release a powerful activator called tissue plasminogen activator(t-PA) that a few days later, after the ______ has stopped the bleeding, eventually converts plasminogen to plasmin, which in turn removes the remaining unnecessary blood ______.

Patients with bleeding disorders and tendencies require the following investigations: 1. Hess test (capillary resistance test). 2. Platelet count. 3. Bleeding time. 4. ______ time (whole blood coagulation time).

After cleaning the finger, do a puncture of about 4 mm deep in the thumb. Touch the bleeding site with a filter paper every 30 seconds. ∙ When bleeding is stopped count the number of spots formed on the paper and then divide it by two. ∙ This will give the bleeding time in ______.

This method gives information about the function of the platelets and the ______ wall.

This is the time taken for the blood to ______ out side the vascular system.

More Like This

Hemostasis and Blood Clotting Mechanisms

Hemostasis Mechanisms Quiz

Coagulation Process in Hemostasis

Blood Physiology and Hemostasis Quiz

The injured tissues and vascular endothelium very slowly release a powerful activator called tissue plasminogen activator(t-PA) that a few days later, after the has stopped the bleeding, eventually converts plasminogen to plasmin, which in turn removes the remaining unnecessary blood .