Реферат на тему:

Heart (Серце)

HEART

Heart is a hollow muscular organ which maintains the circulation of the
blood in the human body.

There are four cavities in-our heart. The two upper cavities are atriums
and the two lower ones are ventricles. At the entrance and exit of the
ventricles one can see four valves.

Our heart is within a strong fibreous bag known a-s the pericardium. The
heart consists of three layers: the epicardium, the myocardium and the
endocardium. The epicardium and the endocardium consist of connective
tissue. The muscular tissue of the heart is known as the myocardium.

For the regulation of the heart’s action there are important nervous
connections, especially with the vagus and with the
sympathetic nerves.

The valves of the heart make the noises known as the heart sounds. At
each heart beat the two atriums contract and expel their contents into
the ventricles.

In adults the heart makes from 70 to 75 beats per minute while in
children it is much higher.

There is a period of rest for the muscle between the beats. This rest
period is shorter during greater activity and longer when the body is
quiet.

On an average the heart is in a state of, contraction about one third of
our life.

Серце

Серце є порожнистий мускульний орган, який підтримує циркуляцію крові в
людському тілі.

Є чотири порожнини у нашому серці. Дві верхні порожнини є передсердя і
дві нижні порожнини є шлуночок. Біля входу і виходу шлуночків можна
побачити чотири впадини.

Наше серце є в межах сильного волокнистого мішечка, відомого як
перикардом. Серце складається з трьох шарів: епікард, міокард і
ендокард.

Епікард і ендокард складаються із сполучних тканин. Мускульна тканина
серця відома як міокард.

Для регуляції серцевої діяльності є важливими нервові сполучення,
особливо з блукаючим нервом і симпатичними нервами.

Клапани серця створюють шуми відомі як сердечні звуки.

У кожному серці б’ються 2 передсердя, що скорочуються і викидають їх
вміст у шлуночки.

Heart is a hollow muscular organ.

There are four cavities in our heart.

There two upper cavities ariums and the two lower ones are ventricles.

Our heart is within a strong fibrous bag known as the pericardium. The
heart consists of tree layers: the epicardium, the myocardium and the
endocardium.

The epicardium and the endocardium consists of connective tissue. The
muscular tissue of the heart is known as the myocardium.

For the regulation of the heart’s action there are important nervous
connections.

The valves of the heart make the heart’s sounds. At each heart beat the
two atriums contract and expel their contents into the ventricles.

Answer the question:

What is heart?

How many cavities are there in heart?

What can we see at the entrance and the exit of the ventricles?

How many layers has the heart?

What do the epicardium consist of?

What is the myocardium?

How is the heart’s action regulated?

What do the valves of the heart make?

How many atriums beat at each heart?

Do the atriums expel their contents into the ventricles?

Похожие записи