Blood Clotting Video Intro

PRIOR KNOWLEGE: What is a stroke?

• a clot blocks blood flow to the BRAIN

• a clot blocks blood flow to the HEART

• the arteries become STIFF

• Blood pressure is TOO HIGH

A patient has the best chance for a full recovery if they receive full medical treatment within _____________

• 90 min

• 3 hours

• 12 hours

• 24 hours

REVIEW: What are these chemical signals called that cells use to communicate with distant cells? _{HINT: We learned about them when we covered the immune system.}

• antigens

• cytokines

• thrombocytes

• neurotransmitters

What type of blood cell assists in blood clotting

• Red Blood cells

• White Blood cells

• Plasma

• Platelets

Coagulation Summary: The cascade starts when an enzyme called ​ ​ (a)   activates ​ (b)   proteins. They change shape, link together, and form longer strands called​ (c)   This network of fibers adds mechanical strength to the clot by making a secure mesh.

• thrombin
• fibrinogen
• fibrin.
• antithrombin
• thrombomodulin
• hemoglobin

Why is it important for your body to have a pathway that can turn off coagulation?

• it interferes with fluid regulation in your body

• too much coagulation can block blood flow

• fibrin is toxic in high levels because it can make the blood too acidic

• smooth muscle in the vessel walls can loose elasticity

Tags

NGSS.HS-LS1-3

REVEIW: What kind of feedback loop has checks and balances to maintain homeostasis (balance)?

• positive feedback

• negative feedback

Tags

NGSS.HS-LS1-3