Answer:
The correct answer will be option-A.
Explanation:
The cardiac cycle of the heart is divided into two phases: contraction (systole) and relaxation (diastole).
The atria and ventricles of the heart contract simultaneously in response to the impulse generated in the SA node. The contraction of the atria and ventricles push the blood or pumps the blood.
The atrial systole pumps blood to ventricles whereas the ventricular systole pumps blood to the body parts.
Thus, option-A is the correct answer.
Answer:
For example, an atom with 6 of 8 electrons in its outer shell will try to gain 2 electrons so its outer shell is full. Ionic bonding occurs when one element donates an electron (or electrons) to another so that both elements will have a full outer shell. As the attractions bring the atoms together, electrons from each atom are attracted to the nucleus of both atoms, which “share” the electrons. The sharing of electrons between atoms is called a covalent bond, which holds the atoms together as a molecule.
Explanation:
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Engaging in excessive exercise in addition to limiting calorie intake falls under the restricting type of anorexia nervosa.
<h3>What is anorexia nervosa?</h3>
Anorexia is defined by a distorted body image and an unfounded fear of being overweight.
Symptoms include attempting to maintain a weight below normal through starvation or excessive exercise.
Anorexia affects more girls and women as compared to boys and men. Anorexia is also more common in young women and girls than in older women.
An eating disorder characterized by food refusal, purging, extreme weight loss, and distorted body image.
Thus, excessive exercise combined with calorie restriction constitutes the restricting type of anorexia nervosa.
For more details regarding anorexia nervosa, visit:
brainly.com/question/14787268
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