Reserved

2021-08-19 21:49:14 #𝐐𝐮𝐢𝐜𝐤_𝐑𝐞𝐯𝐢𝐬𝐢𝐨𝐧 #𝐒𝐡𝐨𝐫𝐭_𝐍𝐨𝐭𝐞𝐬

EPITHILIAL TISSUE

Simple epithelium is composed of single layer of cells and function as lining of body cavities, ducts and tubes.

The compound epithelium consists of two or more than two layers of cells and has protective function.

The squamous epithelium is made up of single layer of flattened cells with irregular boundaries. They are present in lining of blood vessels, air sacs of lungs.

Cuboidal epithelium is made up of single layered cube-like cells and found in ducts of glands and tubular part of nephron of kidney for absorption and secretion.

Columnar epitheliums are made up of tall and slender cells. The nuclei are located at the base. Free surface may have microvilli found in lining of stomach and intestine. The ciliated one are called as ciliated epithelium.

Columnar and cuboidal epithelium specialized for secretion are known as glandular epithelium, which may be unicellular as in goblet cells of alimentary canal or multicellular as in salivary gland. Open / Comment

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2021-08-19 17:03:45 Some important points - Human Reproduction

• Uterus also called womb.

• Longest unstripped muscles of the body are found in the walls of uterus. (During pregnancy)

• Clitoris is a homologous to the penis in the male.

• Bartholin Glands : It is homologous to Cowper's gland of male

• A functional mammary gland is characteristic of all female mammals.

• The milk produced during the initial few days of lactation is called colostrum which contains antibodies (IgA) absolutely essential to develop resistance for the new-born babies.

•Liberation of sperms from Sertoli cells of seminiferous tubules is called spermiation.

• Liberation of sperms from testes is called semination.

• Liberation of sperms from body of male is called ejaculation .

•Mammalian sperms are transfered to vagina of female by the process called insemination.

• In 1 ml of semen, 20 to 120 millions of sperms are present in human being.

• Leydig's cells mature at 10 yrs. of age.

• In humans (and most vertebrates), the first polar body does not undergo meiosis II.

• The first polar body is, therefore, formed merely to get rid of unwanted chromosomes.

• 65-74 days are required to complete the cycle of spermatogenesis in human being. Open / Comment

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2021-08-19 14:02:33 #Shortnotes #Quickrevision

Define electromagnetic induction?

Electromagnetic induction is the production of an electromotive force across an electrical conductor in a changing magnetic field.

List a few properties of the electromagnetic wave?

A few properties of electromagnetic waves are:

Electromagnetic waves are propagated by oscillating waves electric and magnetic waves oscillating at right angles to each other

They exhibit the properties of interference and diffraction

They travel at a speed of 3 × 108 m/s in a vacuum.

They are transverse waves.

The relationship between the wavelength (λ) and frequency (c) of an electromagnetic wave is given as follows:

c = v λ

List a few applications of electromagnetism?

A few applications of electromagnetism are:

Electromagnetism serves as a fundamental working principle for many of the home appliances in household applications.

The Maglev trains or high-speed trains work on the principle of electromagnetism.

Electromagnetic radiations are used in the communication system to transfer data from the source to the receiver

In industries, starting from small instruments to large power equipment, electromagnetism is used at least at one stage of their work.

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2021-08-18 16:15:37 𝐌𝐧𝐞𝐦𝐨𝐧𝐢𝐜𝐬 and 𝐭𝐫𝐢𝐜𝐤𝐬 for 𝐟𝐮𝐧𝐠𝐢 𝐞𝐱𝐚𝐦𝐩𝐥𝐞𝐬.

𝐁𝐚𝐬𝐢𝐝𝐨𝐦𝐲𝐜𝐞𝐭𝐞𝐬-
𝐓𝐫𝐢𝐜𝐤:- Agar Usne Puccha To 𝐁𝐚𝐬.

𝐀𝐠𝐚𝐫- Agaricus (mushroom)

𝐔𝐬𝐧𝐞- Ustilago (rust fungus)

𝐏𝐮𝐜𝐡𝐡𝐚- Puccnia (smut fungus)

Ascomyce𝐭𝐞𝐬-
𝐓𝐫𝐢𝐜𝐤:- Yash and Astha ne Naya Pencil 𝐊𝐡𝐚𝐫𝐢𝐝𝐚

𝐲𝐚𝐬𝐡- Yeast

𝐀𝐬𝐭𝐡𝐚- 𝐀𝐬𝐩𝐞𝐫𝐞𝐠𝐢𝐥𝐥𝐮𝐬

𝐍𝐚𝐲𝐚- 𝐍𝐞𝐮𝐫𝐨𝐬𝐩𝐨𝐫𝐚

𝐩𝐞𝐧𝐜𝐢𝐥- Penecillium

Many 𝐦𝐞𝐦𝐛𝐞𝐫𝐬 like 𝐦𝐨𝐫𝐞𝐥𝐬 and 𝐛𝐮𝐟𝐟𝐥𝐞𝐬 are e𝐞𝐝𝐢𝐛𝐥𝐞 and are considered 𝐝𝐞𝐥𝐢𝐜𝐚𝐜𝐢𝐞𝐬.

𝐏𝐡𝐲𝐜𝐨𝐦𝐲𝐜𝐞𝐭𝐫𝐬-
𝐓𝐫𝐢𝐜𝐤𝐬:-RaMu Alu Pheco
Ra- Rhyzopus (bread mould)

𝐌𝐮- Mucor

𝐀𝐥𝐮- Albugo (parasitic fungi on mustard)

𝐏𝐡𝐞𝐜𝐨- Pythium

𝐃𝐞𝐮𝐭𝐞𝐫𝐨𝐦𝐲𝐜𝐞𝐭𝐞𝐬 _
𝐓𝐫𝐢𝐜𝐤𝐬:- 𝐀𝐂𝐓

𝐀- alterneria

𝐂- Collectotrichum

𝐓 - 𝐓𝐫𝐢𝐜𝐡𝐨𝐝𝐞𝐫𝐦𝐚



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