Question

question 1
red blood cells originate in the
pancreas
bone marrow
kidneys
liver
thymus gland
section: 34.2 blooms: knowledge

question 2
when a blood vessel gets damaged, contractions of smooth muscle referred to as _______ help constrict the vessels to reduce blood flow.
endocytosis
topic: sec. 7.2
skill: knowledge
vascular spasms
formed elements
hemostasis
homeostasis

Explanation:

• For Question 1: Red blood cells are produced in the bone marrow. This is a well - known biological fact.
• For Question 2: When a blood vessel is damaged, vascular spasms are the contractions of smooth muscle that constrict the vessels to reduce blood flow. This is a key part of the body's initial response to blood vessel injury.

Answer:

• Question 1: B. bone marrow
• Question 2: B. vascular spasms