أكاديميا - كولنز معاجم الجيب العلمية - البيولوجيا انكليزي - فرنسي - عربي الحرف ١ _ h

Academia - Collins Scientific Pocket Dictionaries - Biology
English - French - Arabic letter 1 _ H


habitat
habitat m. biotope m

Home. Habitat: The place where an animal or plant lives, such that the organism adapts to certain environmental conditions within the habitat, which may be a seashore, a fresh water pond, a salt water pond, etc.


haemoglobin
hemoglobin f

Hemoglobin. An iron-containing red pigment within red blood cells in vertebrates responsible for transporting oxygen throughout the body.


haemolysis
hemolyse f

Hemolysis. Loss of hemoglobin from red blood cells as a result of damage to the cell membrane. It can be caused by many factors, including osmosis, which can be examined with human red blood cells in which the concentration of the solute is equivalent to a 9% sodium chloride solution.

Soaked in 3% sodium chloride solution

Normal red blood cells
Soaked in pure water
↓
There are no visible cells. Water enters the cells by osmosis
It makes it swell and explode, and this is hemolysis.

9 percent saline solution
There is no osmotic movement

Water stimulates the cells by osmosis, so they contract by osmosis because there is no concentration gradient.

haploid
haploïde

Monoform. A description of a nucleus, cell, or organism that has a single set of unpaired chromosomes. The monoploid number is found in plant and animal gametes as a result of meiosis. The spores are in the gametophyte generation stage, and the gametophyte generation is the production of haploid gametophytes in plants with alternating generations. alternation of generations.
See chromosomes and alternation of meiosis and diploid generations.



heart
coeur m

heart. A muscular pumping organ that keeps blood circulating, and is usually equipped with valves to prevent backflow. The heart in mammals has four chambers, consisting of two relatively thin-walled atria, which receive blood, and two with thicker walls, the ventricles, which pump blood out.

The right side of the heart deals only with deoxygenated blood, while the right side of the heart deals with deoxygenated blood only

Semilunar valves
From the lungs
Pulmonary vein.
Left atrium.
Mitral valve.
Left ventricle
To the body
To the lungs
Aorta.
Pulmonary artery
From the head
vena cava
upper
vena cava
From the lower body
Right atrium
Three-cam valve
Right ventricle
Valve strings
Ventricular septum

The left side deals with oxygenated blood. The wall of the left ventricle is thicker and stronger than the right because it pumps blood to all parts of the body, while the right ventricle pumps it to the lungs only. See -cir heartbeat and culatory system.


heartbeat
battement m

Heart palpitations. The heart contracts and relaxes alternately, and in mammals it consists of two phases: (a) diastole: the atria and ventricles relax, allowing blood to flow from the atria to the ventricles. (b) Systole: The ventricles contract, pushing blood into the pulmonary artery and aorta, and the relaxed atria fill with blood in preparation for the next beat.

Heart palpitations on the right side)
Extraversion
Pulmonary artery.
The valve closes. Al-Hilali
vena cava
contraction
The semilunar valve is open
diode
The border is closed
Contracted right
Ventricle
The valve opens
tripartite
Humps
Right ventricle
relaxed

The heartbeat begins with a structure in the right atrium called the pacemaker, although the pulse rate is controlled by the medulla oblongata, which detects any increase in the level of carbon dioxide in the blood as a result of increased respiration, and is also affected by certain hormones. Such as adrenaline, which is secreted by the adrenal gland. The human heart rate is measured after the pulse rate.


hepatic
health

hepatic. Describing parts of the body related to the liver
And its functions.