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
Semenov [28]
2 years ago
9

Contraction of atria

Biology
1 answer:
yaroslaw [1]2 years ago
4 0

Answer:

Atrial contraction, or “atrial kick,” occurs at the end of diastole just before the closing of the mitral valve and after passive flow has reached the diastasis. Normally, greater than 75% of flow occurs during the passive portion of diastole.

You might be interested in
What is pancreatitis and what is the basic mechanism that underlies the condition?
svp [43]
Pancreatitis is an inflammation of the pancreas that may be caused by years of heavy consumption of alcohol of gall stones. The pancreas plays major important roles such as secreting digestive juices into the small intestines, which help to digest fats, proteins, and the carbohydrates in food. It also release hormones insulin and glucagon that regulate the blood sugar. Pancreatitis is characterized by a pancreas being inflamed, therefore when this happens the body's normal complex coordination is disrupted and the enzymes in the pancreas are prematurely activated before they exit the organ, which results in these enzymes digesting the pancreatic tissue.
7 0
3 years ago
Which of the following events would change Earth's surface the fastest?
avanturin [10]

Answer:

B.) an earthquake

Explanation:

earthquake, volcanoes, tsunamis and landslides are naturally occurring events that can rapidly change earth's surface

4 0
3 years ago
Read 2 more answers
A 6-month-old has been stung on the tongue after putting a bottle in his mouth that had a bee on the nipple. in comparison to th
Juli2301 [7.4K]

Bee sting in a child is really a concern than with the adult because this would cause anaphylaxis, which is a fatal reaction of severe allergy. The effects are swelling, sweating, and pain, difficulty in breathing, dizziness and shock. In this life-threatening scenario, infant really needs immediate care for their immune system and other body organs are not yet fully develop to fight for the allergic reaction.

<span> </span>

3 0
3 years ago
Please help dont put down some answer please i will give you good review and lots of points.
LenKa [72]

Answer:

Planet Y

Explanation:

Planet Y has the smaller period because it takes less time to orbit the star. This is because it has less distance to travel compared to X.

4 0
3 years ago
A bacterial cell that is resistant to a particular antibiotic may spend a large amount of energy producing the modified proteins
VladimirAG [237]

Answer:

Its fitness would be lower than other strains that lack resistance because it is spending energy that the resistant strains can use for other purposes, such as reproduction.

5 0
3 years ago
Other questions:
  • How many levels of classification do scientists use today?
    6·2 answers
  • Which food would give the strongest positive test for lipids
    9·1 answer
  • The solution will turn what color in the presence of opiates?
    10·1 answer
  • The 1918 influenza epidemic killed between 50 million and 100 million people worldwide. This epidemic happened near the end of W
    15·2 answers
  • The genetic information in human and chimpanzee DNA shows a high degree of similarity, as humans share about 96-99% of their DNA
    11·2 answers
  • Which of the following statements justifies that meiosis is reduction division?Select one of the options below as your answer:
    8·1 answer
  • Please help me !!!!<br> Explain why the two pictures below are incorrect:
    10·1 answer
  • Which of the following stages of photosynthesis involves carbon fixation, reduction reactions, and the ribulose 1,5-bisphosphate
    10·2 answers
  • I need the answer for 8 PLEASE ASAPPPP!!!!!!
    14·1 answer
  • Which term describes the zone of life on the Earth that includes all living things?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!