1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
user100 [1]
3 years ago
12

Collateral circulation in the heart allows bypass of the pulmonary circulation before birth. a. helps return blood from the lung

s to the left atrium. b. may allow bypass of a blocked coronary artery. c. branches directly from the ascending aorta. d. directly returns blood to the inferior vena cava.
Biology
1 answer:
Readme [11.4K]3 years ago
3 0

Answer:

Option B, may allow bypass of a blocked coronary artery.

Explanation:

Collateral circulation consists of a network of tiny blood vessels which are nit functional under normal conditions. However, they become functional in case of coronary artery disease.  

In coronary artery disease, the coronary arteries narrow down leading to blockage and stopping the flow of blood in the muscles of heart.  

In this condition, the collateral circulatory network allows flow of blood around and within the blocked artery thereby protecting heart tissue from injury

Hence, option B is correct

You might be interested in
This is right?<br> And what is 18’s answer?
aliina [53]
Yeywyayayayya a yaya a a yaya a yaya a stay
5 0
3 years ago
Read 2 more answers
The form of circulatory shock known as hypovolemic shock is ________.
tatyana61 [14]
The shock from loss of blood volume which is large-scale, or shock after sever vomiting or diarrhea. 
7 0
3 years ago
Why is it important to avoid planting the same crop in the same field year after year
4vir4ik [10]
Planting the same crop in the same place each year zaps nutrients from the earth and leaves soil weak and unable to support healthy plant growth. Because soil structure and quality is so poor, farmers are forced to use chemical fertilizers to encourage plant growth and fruit production.
6 0
3 years ago
Enzymes ______ chemical reactions.<br> A: speed up<br> B: Slow down<br> C: Don't change
xxMikexx [17]
Enzymes speed up the chemicaal reaction .
8 0
3 years ago
Read 2 more answers
Which statement describes asexual reproduction, but not sexual reproduction? A) New organisms are formed only after fertiliztion
lord [1]
<span>D) Daughter cells contain the same genetic information as parent cells.</span>
3 0
3 years ago
Other questions:
  • Land breeze and sea breeze keep coastal climate moderate throughout the year. Which of these causes land and sea breezes to blow
    12·2 answers
  • What is the smallest "building block" of the elements that make up the universe?
    10·1 answer
  • cora, an electrician, wraps a copper wire with a thick plastic coating. what is she most likely trying to do? keep the electric
    10·2 answers
  • According to the endosymbiotic theory, which cellular process was involved in the evolution of mitochondria and chloroplasts?
    10·2 answers
  • What part of the cell is responsible for packaging and sending proteins?
    7·1 answer
  • Do prokaryotes cells have a nuclear membrane
    7·1 answer
  • "Imagine a protein that has been engineered to contain a nuclear localization signal, a nuclear export signal, a C-terminal pero
    7·1 answer
  • If an earthquake struck Tokyo Japan would the p wave reach Washington D.C.
    9·1 answer
  • It can be inferred from the passage that the time required to replenish muscle glycogen following anaerobic glycolysis is determ
    15·1 answer
  • True or False: Blood pressure is recorded as the diastolic BP over systolic BP.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!