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Hussain Biology
India
Registrace 19. 01. 2016
Hi, this is Shabir Hussain Dar, My goal is to give a clear and deep explanations regarding all life sciences. I hope you people will definitely learn some stuff..A single small good deed is better than doing nothing...Thanks
Owner Shabir Hussain Dar
Owner Shabir Hussain Dar
Adult Ovary Functional Anatomy | Ovarian Cycle
Menstrual Cycle : czcams.com/video/7UpFV6nEUVA/video.html
The ovary plays a crucial role in the ovarian cycle, which is a tightly regulated process involving hormonal changes and the maturation and release of eggs. Here's an overview of the functional anatomy of the ovary in relation to the ovarian cycle:
Ovarian Structure:
The ovary is an almond-shaped organ located on either side of the uterus within the pelvic cavity.
Each ovary is composed of ovarian follicles, which are structures that contain the developing egg (oocyte).
Ovarian Cycle Phases:
The ovarian cycle is divided into three phases: follicular phase, ovulation, and luteal phase.
Follicular Phase:
During the follicular phase, several ovarian follicles begin to grow under the influence of follicle-stimulating hormone (FSH) from the pituitary gland.
Typically, one dominant follicle (Graafian follicle) emerges and continues to develop, while the others regress.
Ovulation:
Ovulation marks the release of a mature egg (oocyte) from the Graafian follicle. This usually occurs around the midpoint of the menstrual cycle.
Ovulation is triggered by a surge in luteinizing hormone (LH), which causes the mature follicle to rupture and release the egg.
Luteal Phase:
After ovulation, the ruptured follicle transforms into the corpus luteum, a temporary endocrine structure.
The corpus luteum secretes progesterone and estrogen, preparing the uterus for possible implantation of a fertilized egg.
If fertilization does not occur, the corpus luteum degenerates, leading to a decrease in progesterone and estrogen levels.
The ovary plays a crucial role in the ovarian cycle, which is a tightly regulated process involving hormonal changes and the maturation and release of eggs. Here's an overview of the functional anatomy of the ovary in relation to the ovarian cycle:
Ovarian Structure:
The ovary is an almond-shaped organ located on either side of the uterus within the pelvic cavity.
Each ovary is composed of ovarian follicles, which are structures that contain the developing egg (oocyte).
Ovarian Cycle Phases:
The ovarian cycle is divided into three phases: follicular phase, ovulation, and luteal phase.
Follicular Phase:
During the follicular phase, several ovarian follicles begin to grow under the influence of follicle-stimulating hormone (FSH) from the pituitary gland.
Typically, one dominant follicle (Graafian follicle) emerges and continues to develop, while the others regress.
Ovulation:
Ovulation marks the release of a mature egg (oocyte) from the Graafian follicle. This usually occurs around the midpoint of the menstrual cycle.
Ovulation is triggered by a surge in luteinizing hormone (LH), which causes the mature follicle to rupture and release the egg.
Luteal Phase:
After ovulation, the ruptured follicle transforms into the corpus luteum, a temporary endocrine structure.
The corpus luteum secretes progesterone and estrogen, preparing the uterus for possible implantation of a fertilized egg.
If fertilization does not occur, the corpus luteum degenerates, leading to a decrease in progesterone and estrogen levels.
zhlédnutí: 37
Video
Osteoblasts vs Osteoclasts
zhlédnutí 290Před 12 dny
In this educational CZcams video, viewers will learn about the distinctions between osteoblasts and osteoclasts, two crucial cell types involved in bone formation and remodeling. The video will delve into the unique functions, structures, and roles of these cells in maintaining bone health and integrity. 2. This informative CZcams video explores the contrasting characteristics of osteoblasts an...
Paragonimiasis | Lung fluke and its Life Cycle
zhlédnutí 330Před 21 dnem
Paragonimus westermani (Japanese lung fluke or oriental lung fluke) is the most common species of lung fluke that infects humans, causing paragonimiasis Human infections are most common in eastern Asia and in South America. More than 30 species of trematodes (flukes) of the genus Paragonimus have been reported to infect animals and humans. Among the more than 10 species reported to infect human...
Mismatch Excision Repair in Eukaryotes
zhlédnutí 543Před 28 dny
DNA mismatch repair (MMR) is a system for recognizing and repairing erroneous insertion, deletion, and mis-incorporation of bases that can arise during DNA replication and recombination, as well as repairing some forms of DNA damage. Mismatch repair is strand-specific. During DNA synthesis the newly synthesised (daughter) strand will commonly include errors. In order to begin repair, the mismat...
Fatty Acid Synthesis in Plastids
zhlédnutí 359Před měsícem
The plastidial fatty acid synthesis requires acetyl-CoA, ATP and NAD(P)H as substrates, and multiple routes exist to provide these substrates, although the relative importance of these routes depends on the sources of plastids. Fatty acid synthesis in plastids occurs mainly in plants. Plastids are specialized organelles found in plants and algae that play important roles in many metabolic proce...
Ascending Paper Chromatography in 1 min
zhlédnutí 265Před měsícem
Paper chromatography is an analytical method used to separate coloured chemicals or substances.It is now primarily used as a teaching tool, having been replaced in the laboratory by other chromatography methods such as thin-layer chromatography . Here the solvent travels up the chromatographic paper. Both descending and ascending paper chromatography are used for the separation of organic and i...
Understanding the PAH Gene Mutation Causes and Consequences #biology
zhlédnutí 269Před měsícem
Phenylketonuria in 60 seconds
Rhematoid Arrhritis | Pathophysiology Mechanism
zhlédnutí 484Před měsícem
Rheumatoid arthritis (RA) is a long-term autoimmune disorder that primarily affects joints. It typically results in warm, swollen, and painful joints.[1] Pain and stiffness often worsen following rest.Most commonly, the wrist and hands are involved, with the same joints typically involved on both sides of the body.The disease may also affect other parts of the body, including skin, eyes, lungs,...
Alkaptonuria
zhlédnutí 415Před 2 měsíci
Phenylketonuria : czcams.com/video/Gf2-Bwkb6D0/video.html&pp=ygUXcGhlbnlsa2V0b251cmlhIGh1c3NhaW4= Alkaptonuria is a rare inherited genetic disease which is caused by a mutation in the HGD gene for the enzyme homogentisate 1,2-dioxygenase if a person inherits an abnormal copy from both parents (it is a recessive condition), the body accumulates an intermediate substance called homogentisic acid ...
Phenylketonuria and its metabolism
zhlédnutí 496Před 2 měsíci
Phenylketonuria (PKU) is an inborn error of metabolism that results in decreased metabolism of the amino acid phenylalanine.Untreated PKU can lead to intellectual disability, seizures, behavioral problems, and mental disorders.Phenylketonuria is an inherited genetic disorder. It is caused by mutations in the PAH gene, which can result in inefficient or nonfunctional phenylalanine hydroxylase, a...
Biosynthesis of Non Essential Amino Acids | Basic Overview
zhlédnutí 3,6KPřed 3 měsíci
Six other amino acids are considered conditionally essential in the human diet, meaning their synthesis can be limited under special pathophysiological conditions, such as prematurity in the infant or individuals in severe catabolic distress These six are arginine, cysteine, glycine, glutamine, proline, and tyrosine. Six amino acids are non-essential (dispensable) in humans, meaning they can be...
Structure of Inner Ear
zhlédnutí 610Před 3 měsíci
Structure of Ear : czcams.com/video/DWAdKytD2zA/video.htmlsi=Wam3XhKznfMBu31S The inner ear sits within the temporal bone in a complex cavity called the bony labyrinth. A central area known as the vestibule contains two small fluid-filled recesses, the utricle and saccule. These connect to the semicircular canals and the cochlea. There are three semicircular canals angled at right angles to eac...
Structure of Ear | Flow Charts and Animation
zhlédnutí 755Před 4 měsíci
An ear is the organ that enables hearing and (in mammals) body balance using the vestibular system. In mammals, the ear is usually described as having three parts: the outer ear, the middle ear and the inner ear. The outer ear consists of the pinna and the ear canal. Since the outer ear is the only visible portion of the ear in most animals, the word "ear" often refers to the external part alon...
BAFF Signalling Pathway | B Cell Maturation and Survival
zhlédnutí 635Před 4 měsíci
BAFF is a soluble factor that activates the noncanonical NF-κB pathway, which is a key arm of NF-κB signaling. BAFF provides essential survival signals during B cell maturation. The NF-κB pathway is a prototypical proinflammatory signaling pathway that plays a critical role in the development, survival, and activation of B lymphocytes. NF-κB is a family of transcription factors that bind the en...
cGAS STING Signalling Pathway
zhlédnutí 2,1KPřed 4 měsíci
The cytosolic DNA-sensing cGAS-STING pathway in innate immunity. Cyclic GMP-AMP synthase (cGAS) is a protein, which detects various cytosolic dsDNA, including viral DNA, damaged self-DNA released by dying cells, micronuclei, and mitochondrial origins. dsDNA activates cGAS via forming cGAS-dsDNA in 2:2 complexes. Mitochondrial damage and the release of mitochondrial DNA (mtDNA) in the cytosol al...
Itx totally awesome the way u explain each n Everything .each n every lecture of urs is fantastic ❤❤❤ l
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Great job sir, thankyou very much😊😊
Can rabies virus be inhalable? Or airborne? My friend is asking
Amazing 🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉
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your handwriting and diagramz are also easy to follow
Calcidef tab containing folic acid (0.1mg)can cause black stool in adult human being?
Wonderful bro
Thanks a lot sir..
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Such a great video!!
Thank u
Keep up the great work 🙂
Thanks ❤
Thanks
❤ imagine videos
thank you sir...i join for csir coaching but molecular biology feels very much complecated.quickly i remembered you.thank god you did all videos regarding replication.can you continue lectures on csir net.you are explaining well.while seeing your video,i dream for getting jrf.that much confidence i got from you.good teacher....love you hussain biology💞
@@anjalidevadas6934 thanks Anjali for appreciation..... glad to know that..... and yes u will get JRF easily with this kind of determination
@@hussainbiology 🥰🥰
what are you doing?did you became scientist?
@@anjalidevadas6934 no i am not scientist....
Aisa lag raha h jaise cricket explanation chal raha ha😅
Tholisi normal english bolo bhaya sam aani chaliye british bhi ase nahi bolte 😅
Sir... Read this... DNA pol3 functions in 5'-3' direction. My question is.. This function is based on which strand's 5'-3 ? Is it Parent DNA strand's 5'-3' or new synthesizing strand's 5'-3' ? Ohh ohh ohh , got it... after.... Thank you sir 😇
Where is elongation part ??
I'm an a level biology student thank you so much
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Tysm❤
This video helped me to revise CAM chapter super quick, very helpful sir ,. You are the good teacher
Sir please speak slowly
@@nousinfarhana7698 extremely sorry ... I am taking care of speed now
Sir you gave m your note ❤
Alhamdulillah, you make it easy to understand. Thanks a lot bro.
Shabir, Thank you very much. Another fascinating video. Solid work! I'm driving. No emojis right now.
Dear my friend thank u for sharing knowlegs for use specaly the parent like me , my son and me accident to bite the dog sister inlaw house so imeget to go hospital asun uspasible to take vuccin and now we me and my son is safe now that why i prayerd to there suffer this situtation pls dont ignor this that is true her my country much victim there children.
So what about the excess portion of DNA that is synthesized at the end of the actual DNA??,,,,,,, if this happens, then in each replication, the DNA will become slightly longer containing some unneeded part!!!!,,,,,,,,,,,,,,,, PLEASE ANSWER ME 🙏🙏
جيد بقوووة ❤
Excellent. New friend now and subscriber😀
@@bio_info glad to know that... 🥰
Hello sir why all cells do not have mhc 2 ??
Trust me really helpful and far better from other available videos so easy to understand. Thank you ❤
@@tamanna4574 thanks Tamana for appreciation..Glad it helps
Trust me really helpful and far better from other available videos so easy to understand. Thank you ❤
helpful video..but i have a doubt- so the whorl for which the genes are not present will be absent in the flower?
@@kalpanajha9191 not absent.. like we have mutation in APETALA2 in A. thaliana, carpels develop instead of sepals and stamen in place of petals
@@hussainbiology so then sepal and petals are absent right? 😅 and who carries out their function
@@kalpanajha9191 that is why we call it mutation...... When there is mutation there is always a loss of function......
Nice video
Polymerase alpha doesn’t synthesise lagging or leading strand it’s done by pol delta and epsilon. Correct me if I am wrong 😊
After watching this, I got ans. of my ques on this topic. Thank you!!
most welcome...Glad to know that
Bro my name is Hussain
Great... Glad to know that brother
@@hussainbiology I mades presentation with your video thanks you
👍🏻
thanks
simply awesome explanation.tq sir
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Sir g konsi book sey krwa rahy hain??name
Lodish Cell Biology Alberts Cell Biology
PS verma wali book sey plz cell biology cover krwa den plz sir
@@areejfatima4392 like what kind of topics and for which level ( M.Sc or B.Sc???
BS level Ki .... BS zoology Ki hui Hy
Regulation of gene expression 2.Recombinnant DNA technology .role of genetic engineering in economic development on the area of medicine and human health ..agriculture ..Industry ... 3: Cytoplasmic organelles ( Membrane system ,mitochondria golgi bodies lysosomes etc ) 4: plasma membrane and function .5 : cytoskeleton 6:DNA replication 7 : transcription 8: translation.
Awesome sir thank u soo much😢