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
jasenka [17]
3 years ago
13

An individual’s EKG shows changes in atrial contraction. Which image shows contraction of the atria?

Biology
2 answers:
Lelu [443]3 years ago
8 0

The third image is the one with the contraction of the atria.

Jlenok [28]3 years ago
7 0

The right answer is The first image (the left one).

An atrium is an upper cavity of the heart, delimited by a thin wall, receiving blood from the bloodstream. There are two in the human heart, they allow the passage of blood from the veins (cellars and lungs) to the ventricles (right and left).

In its upper part (near the entrance of the superior vena cava) is located the sinus node, microscopic structure from which the electrical impulse which ensures the contraction of the heart (especially atrium) ...

The depolarization of the action potential is conducted step by step in the cells of the right and left atria, accompanied by a contraction of the muscle fibers.

You might be interested in
In your own words, explain the organization of the
Illusion [34]

Answer:

  • Zygote is formed by fusion of 23 chromosomes from female and 23 chromosomes from male
  • This fusion happens through a process of fertilization to form an egg
  • The human zygote consist for 46 chromosomes and is diploid in nature
  • During the process of fusion,the sperm combines with the membrane of the ovum
  • Later the zygote is formed and become activated for the cell division for the formation of embryo
  • Embryo is form by undergoing different stage of development namely :-

1)morula

2)blastula

3)gastrula

3 0
3 years ago
Which type of movement is characteristic of the articulation between the tibia and fibula with the talus?
jonny [76]

Solution:

The function and mobility of each joint depends on its anatomical design. Joints that permit no movement or slight movement are common in the axial skeleton where basic structural support and protection  is expected. Joints that are freely moveable are common in the appendicular skeleton where mobility is required. Is known as articulation.

The tibial collateral ligament reinforces the medial side of the knee joint and the fibular collateral ligament reinforces the lateral side of the knee joint. Two popliteal ligaments reinforce the posterior side of the knee joint.


7 0
4 years ago
(20 points) {brainliest} PLEASE HELP MEEEE <33333
Luda [366]

Answer:

I think is C.

Explanation:

Oh and the mouse is not cute.

3 0
3 years ago
Read 2 more answers
How can the mass of an object be determined in a laboratory?
Murrr4er [49]

The object is balanced against standard units of mass

5 0
3 years ago
Why would the tissues of a leaf need to have the ability to resist changes in pH in their natural environment?
Anastaziya [24]

Answer:

The tissues of a leaf needs to have the ability to resist changes in their natural environment so that they can survive

6 0
3 years ago
Other questions:
  • How do animal-like protists differ from plant-like protists?
    15·1 answer
  • John, a 52-year-old construction worker, was recently diagnosed with diverticular disease. how could his breakfast be improved t
    11·1 answer
  • Operons are made of two or more genes that are located near each other in a sequence of DNA. Some operons allow for regulation o
    15·1 answer
  • You are awaiting the white blood cell differential results for a patient who presented with a ruptured appendix and peritonitis.
    12·1 answer
  • Edema occurs when____________
    14·1 answer
  • In which part of the nephron are sodium and chloride ions actively reabsorbed?
    6·1 answer
  • Please.....please....please...pleaseeeeee help me !!!!!!!! :(
    5·1 answer
  • Which of the following would be considered part of an emerald tree boa's ecological niche? Select all that apply. mating ritual
    14·1 answer
  • Define science 1-3 sentences thank you!
    12·1 answer
  • Skeletal Muscle can connect to ________, for example. It is involved in the movement of arms and legs.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!