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BLOOD VESSELS -
1. Tunica Externa - Made up of connective tissue, collagen fibres present.
2. Tunica media - Thick, made up of smooth muscles arranged in circular way.
3. Tunica interna - Inner most layer. Outerly made up of yellow elastin fibre. Inner layer is of endothelial cells.
S.NO.
ARTERY
VEIN
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Carry blood away from heart
Pure blood flows
(in pulmonary artery impure blood flows)
Blood flows with jerk
Blood flows with more pressure
Walls are thick
Lumen is narrow
Not collapse after death
Deeply placed
Valve absent
Wall firm
Towards heart
Impure blood flows
(In pulmonary vein pure blood flows)
Steady
Less pressure
Thin
Broad
Collapse
Superficially placed
Present to check back flow
Elastic
One of the free-living, anaerobic nitrogen-fixer is: 1. Beijernickia 2. Rhodospirillum 3. Rhizobium 4. Azotobacter Rhodospirillum
Tracheostomy Care A tracheostomy is an external opening made into the trachea in order to provide an artificial airway (an opening is made in the 2nd and 3rd or 4th trach
What is Binary Fission in cell reproduction? Cell division takes place in prokaryotic cells by binary fission, also called prokaryotic fission. In prokaryotes, DNA is contained
Tricuspid Valve Replacement : It is done for organic tricuspid valve disease and at times for functional tricuspid I regurgitation. When done along with other procedures, it
Do all vascular plants develop annual rings? Vascular plants are those, which have phloem and xylem structures within them to transport water and nutrients around the plant. Mo
Define the Over nutrition obesity of Infant? An infant is never put on a reducing diet. The chances of obesity are least if an infant is exclusively breast-fed till 6 months. I
5 classification of mollusco
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What is the function, other than protection, of the ribs? The ribs help to alter the volume of the thorax during breathing movements.
PSYCHEDELI C DRUGS (HALLUCINOGENS) - They act mainly on CNS and greatly alter one's thoughts, feelings and perceptions, called psychedelic drugs. They cause optical or a
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