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
STatiana [176]
3 years ago
13

What is the purpose of the pericardial sac that surrounds the heart in mammals

Biology
1 answer:
Nitella [24]3 years ago
6 0

Answer:

Pericardial sac has protective tole

Explanation:

Pericardial sac or pericardium is a fibrous tissue that surrounds the heart. It has two coats:

  1. the outter coat-parietal pericardium
  2. the inner coat-visceral pericardium or epicardium which is double-layered and contains pericardial fluid between those two layers (pericardial fluid is necessary as a lubricant for the heart movement).

Besides lubrication, percardium also protects heart from infections, fixes it and limits its movements.

You might be interested in
What causes an ecosystem to move from a primary successional stage towards a relatively-stable mature ecosystem?
Gnoma [55]

Answer:

The correct answer is "secondary succession, an ecological succession step where an area previously occupied by living beings is disrupted".

Explanation:

In ecological succession, an ecosystem changes and develops through a series of steps. The first step, is the primary successional stage where rocks or other sedimentary structures are colonized by microorganisms. The second step, where the ecosystems changes towards a relatively-stable mature stage, occurs when an area previously occupied by living beings is disrupted. This step is named secondary succession, and the most clear example of this phenomena occurs when wildfire clears oak and hickory forests.

8 0
3 years ago
Meningo encephalitis is caused by​
DedPeter [7]

Meningitis is an inflammation of the membranes (meninges) surrounding your brain and spinal cord. ... Most cases of meningitis in the United States are caused by a viral infection, but bacterial, parasitic and fungal infections are other causes. Some cases of meningitis improve without treatment in a few weeks.

4 0
3 years ago
Read 2 more answers
What was integral to the spread of Enlightenment from Europe to America?
vesna_86 [32]
There were several ways that the enlightenment from Europe to America was spread. The most integral way was the high literacy rates in the New England colonies that enables the settlers to read books and newspapers. The correct answer is A. 
5 0
3 years ago
Read 2 more answers
Please help!! It’s late so I need help now! (Photos) I’m pretty sure you can search up the answers so this won’t be too hard.
diamong [38]

Answer:

Explanation:

- Fertilizer during runoff

- Heat, and radiative chemicals

- Yards and runoff

- Heating the water if run by steam by pumping the waste into rivers

- The clean water act focuses on navigation and water as in fishing, and swimming water while the safe drinking water act dictates how water comes to our cups from their original sources.

- You can get information by any sites locally about disposing chemical waste or any government website ending in .gov

- Home waters including sewage have to be filtered through heavy chemical processes using extra waters and factories. our clean water volume is plummeting.

8 0
2 years ago
A metal body of mass 81 g occupies a volume of 30 cm3. Identify the metal.
Cerrena [4.2K]

Answer:

Aluminum

Explanation:

The density of Aluminum is 2.7 g/cm3

We know the volume and mass of the unknown metal, as density is mass/volume:  81g/30cm3 = 2.7 g/cm3 which is the density of Aluminum :)

8 0
3 years ago
Read 2 more answers
Other questions:
  • Which statement best describes the difference between a physical change and a chemical change
    15·2 answers
  • What sort of environmental pressures do deep- sea organisms have to deal with on daily basics?
    10·1 answer
  • What method do bacteria reproduce? What is it called?
    10·1 answer
  • Examine the diagram of the food web described in the passage. Using arrows, how would you label the direction of energy flow thr
    14·1 answer
  • Which of the following is NOT a type of air pollution?
    12·1 answer
  • Various protozoa can divide several times, producing several daughter cells, by _____. binary fission; multiple fission; fragmen
    14·2 answers
  • Cytochrome c is an enzyme located in the mitochondria of eukaryotic cells. The number of differences in the amino acid sequences
    13·1 answer
  • What is one of the causes of mechanical weathering?
    13·2 answers
  • Which option identifies one secetion of the ocean floor?​
    6·1 answer
  • What does the skeletal part of the musculoskeletal system do? Why is 'protects the organs of the body' correct?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!