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
11111nata11111 [884]
3 years ago
5

Heart sound 2 (choose all correct) is generated by the closing of the atrioventricular valves occurs when the aortic and pulmona

ry valves backfill with blood marks the beginning of isovolumic relaxation is associated with turbulence during atrial contraction
Biology
1 answer:
Nutka1998 [239]3 years ago
3 0
<span>Answer: occurs when the aortic and pulmonary valves backfill with blood</span>

The second heart sound,that is heard in normal hearts, is generated by the closing of the semilunar valves((the aortic valve and pulmonary valve). Before that, the first sound corresponds to the closing of the atrioventricular valves.



You might be interested in
The outer layers of most jovian moons are made primarily of
timurjin [86]
They are mostly made of ices.


Hope this helps!
5 0
3 years ago
How do biologists describe the order of the stages of the<br> cell cycle?
ololo11 [35]
The cell stays in the interphase stage the longest. The interphase stage includes the G1 phase which is the initial growth of the cell. Next is the S phase and in simple terms it’s just the replication of the DNA. Next is the G2 phase which is the continued phase of cell growth. After interphase is completed, the cell enters prophase, then metaphase, then anaphase, then telophase, and finally cytokinesis.
7 0
3 years ago
Organisms at the first trophic level in a food pyramid are:
brilliants [131]

Answer:

The first and lowest level contains the producers, green plants. The plants or their products are consumed by the second-level organisms—the herbivores, or plant eaters.

Explanation:

3 0
3 years ago
Plz help me well mark brainliest!!
Nitella [24]
C. The problem of endangered species
7 0
3 years ago
Not all leaves are green. Some plants have leaves that appear purple. What do you know about the pigments in plants whose leaves
SSSSS [86.1K]

Answer:

<h3><em>Anthocyanin</em></h3>

Explanation:

These pigments give plants, flowers, and fruits, their brilliant colors ranging from pink through scarlet, purple, and blue. Anthocyanins are particularly found in fruits such as grapes, purple grapes, black berries, strawberries, and raspberries.

7 0
3 years ago
Other questions:
  • Which class of anti-HIV drug targets the virus before it enters cells?
    11·1 answer
  • Which one of the following statements about ribosomes is true?
    14·1 answer
  • 5)
    7·1 answer
  • The interior of a cell membrane is _________
    5·1 answer
  • Which would be best categorized as heat transfer by convection? A) Wearing a white shirt to stay cool on a summer day. B) Noodle
    13·2 answers
  • Which of the statements would BEST serve as a topic sentence for a paragraph?
    12·2 answers
  • What is the longest animal in the world??
    10·2 answers
  • What are autosomes?
    9·1 answer
  • (Only answer it if you know the answers)
    13·1 answer
  • This movement requires ____________ proteins (pumps) and energy in the form of _______________.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!