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
Bas_tet [7]
3 years ago
10

The heart is a muscular organ that pumps blood. Blood that contains waste materials is brought to the heart by blood vessels. Th

is blood enters the _____ and then moves down. The presence of the______ prevents the backflow of blood inside the heart
Biology
2 answers:
cupoosta [38]3 years ago
8 0
1: left atrium, right atrium, right ventricle.

2: atrioventricular valve, valves in the aorta, valves in the veins.
ivolga24 [154]3 years ago
7 0

<u>ANSWER:</u>

This blood enters the <u>Right atrium</u>, <u>right ventricle</u> and then moves down. The presence of the <u>valves</u>  prevents the backflow of blood inside the heart.

<u>EXPLANATION:</u>

  • The blood that contains water materials and is poor in oxygen content is brought by the blood vessels to the right atrium or the upper chamber of the heart.
  • The blood then moves via the tricuspid valves to the right ventricles or the lower chamber. The presence of valves prevents the blood from flowing back. The valves also control the amount of blood flow in the heart.  
You might be interested in
Compare and contrast the role of secretory vesicles, the lysosome, and the peroxisome.
Daniel [21]

Lysosomes ( common in animal cell but rare in plant cells) contain hydrolytic enzymes necessary for intracellular digestion in white blood cells that eat bacteria) lysosomes contents are carefully released Into the cytoplasm can also cause cell death.  

Peroxisomes: this organelle is responsible for protecting the cell form its own production of toxic hydrogen peroxide. As an example, white blood cells produce hydrogen peroxide to kill bacteria .The oxidative enzymes in peroxisomes break down the hydrogen peroxide into water and oxygen.

Secretory vesicles: cell secretions –e.g, hormones, neurotransmitters, are packaged in secretory vesicles at the Golgi apparatus. The secretory vesicles are then transported to the cell surface for releases.  


8 0
3 years ago
Read 2 more answers
Artifacts have __________ value.
Elis [28]

Answer:

espoused values

Explanation:

plz brainliest

5 0
3 years ago
According to cell theory, what do each of the following organisms have in common?
mafiozo [28]

Answer:

Hope it helps!!

Explanation:

According to cell theory, what do each of the following organisms have in common? Each organism is able to photosynthesize. They are all made up of the same kinds of atoms. ... Cells are the basic unit of structure for each organism.

7 0
3 years ago
The bones in a bird are hollow, reducing its weight for flight. This is an example of which characteristic of life?
dimulka [17.4K]

The bones in a bird are hollow, reducing its weight for flight, this is an example of ADAPTATION. The adaptive responses emerge as a consequence of different environmental pressures.

<h3>Adapatation and environment</h3>

Adaptation is an evolutionary process by which organisms adjust to the environment in which they live.

For example, the bones in a bird are hollow because this adaptive feature enables them to fly.

Adaptations are a consequence of the process of natural selection, i.e., the differential survival and reproduction of the fittest organisms.

Learn more about adaptations here:

brainly.com/question/2396978

7 0
2 years ago
When one plant's pollen fertilizes the egg of another plant it is called _______________/___________
Anna007 [38]
When one plant's pollen fertilizes the egg of another plant it is called cross pollination.
7 0
3 years ago
Other questions:
  • What happens when molten material travels along the underside of the crust?
    9·1 answer
  • Cells transplanted from the neural tube of a frog embryo to the ventral part of another embryo develop into nervous system tissu
    11·1 answer
  • Competition between two species occurs when?
    8·1 answer
  • What is the creation of an opening into a brain ventricle called?
    9·1 answer
  • What are two chemical properties of sodium
    11·1 answer
  • Ms. Timms explains to her class that stars look different in the sky depending on how close they are to Earth. She takes the cla
    11·1 answer
  • What if dessert plants were removed from the desert
    6·2 answers
  • Which sentence best describes the role carbon plays in the structure of compounds present in living things?
    15·1 answer
  • Jayden is taking a test. He has to write why scientists support the theory that life began near hydrothermal vents in the ocean.
    15·1 answer
  • What is the correct definition of a species?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!