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

Academia - Collins Scientific Pocket Dictionaries - Biology
English - French - Arabic Letter 1_ I


ileum
iléum m

I have final. The final section of the small intestine that receives food from the duodenum. The lining of the final intestine secretes protein digestion enzymes that complete the digestion of enzymes, carbohydrates, and fats, converting them into amino acids and simple sugars.
(mainly glucose), fatty acids and glycerol. Food absorption occurs in the final intestine, which has a wide absorption surface due to the presence of thousands of finger-like structures called villi. Each villi has a very thin lining that allows the passage of dissolved food, and each contains a network of blood capillaries. The following drawing shows a section through the wall of the final intestine, showing the structure of the villi, to the left, and the structure of the villi, to the right.

Digested food goes to the capillaries
Fat goes to the milk vessel
A lymphatic system removes fats from the villi
A small branch of the hepatic portal vein takes blood to the liver

Blood vessels carry blood to each villi
Villus
Elongated muscle
Round muscle

Amino acid and glucose particles spread to the blood capillaries and are transported from them first to the liver and then to the general blood circulation. The fatty acid and glycerol pass into the mammary glands and are circulated by the lymphatic system. Unabsorbed matter, such as roughage, passes into the large intestine. Look . Assimilation and digestion.


imago
imago f

Adult is an adult, sexually mature insect. Look . metamorphosis.


implantation
implantation f

Stitches attaching a mammary embryo to the uterus lining at the beginning of pregnancy. In preparation for implantation, the uterine wall becomes thicker with the addition of new cells and increased blood supply. See pregnancy and fertilization

incisors
incisives fpl

Breakers. Teeth are chisel-shaped pieces located in the front of the mouth and used to bite off pieces of food. Look . omnivore, herbivore, carnivore, dentition and dental formula.


incomplete dominance
dominance f incomplete

Incomplete dominance. A genetic condition in which neither pair of alleles is dominant but rather combine to produce an intermediate advantage. For example: inheritance of feather color in chickens
The Andalusian fowl shows incomplete dominance. Look . monohybrid inheritance.

indicator organism
organism indicator

Organism is an organic function that can only survive under certain environmental conditions, and therefore its existence provides information about the environment in which it exists. For example: gut lives in the intestines of animals, Escherichia coli bacterium, and is always found in faeces. Although this bacterium is harmless in itself, its presence in water indicates contamination with sewage.


inorganic compounds
Composés mpl inorganiques

Inorganic compounds. Inorganic chemicals within cells originating from the external natural environment. The cell's most abundant inorganic compound is water, which is present in quantities ranging from five percent to ninety percent.
The other inorganic components of cells are mineral salts, which are present in quantities ranging between one and five percent. See organic compounds.