This baby, pictured in yellow, is a nucleus. They contain genetic information for every single eukaryotic cell (apart from mitochondrial DNA, and the DNA of chloroplasts). They are the most conspicuous organelle under the microscope, appearing as a darker, denser area. The nuclear envelope separates the nuclear contents from the cytoplasm. The double membrane (nuclear envelope) is periforated by pores 100nm in diameter. At the lip of each pore, the inner and outer membranes are continous, leaving a space between them of 20-40nm. The inside of the envelope is lined with the nuclear lamina, a netlike array of protein filaments which serve to maintain shape. There is also much evidence for a nuclear matrix within. DNA is present as chromatin or chromosomes in the nucleus, with each species having a characteristic number of chromosomes and genes. A nucleolus is present within the nucleus and is identified as densely stained granules and fibres. The nucleolus synthesises rRBA and studies suggest it also plays a part in is regulation of cellular processes (such as division).
Neural Stem Cells
i-amoutofthisworld asked: Hey! I just want to say I really love your blog! It makes me learn in advance or review most of the times about my major subjects (e.g, anatomy and physiology) and a whole lot more. I'm still a sophomore taking up BS Pharmacy tho. Still confused if I should proceed to medicine or not. More power to you and to this blog! :)
Awwh, thank you so much! I love that it helps in some way with your studies and I hope it makes it more interesting to learn too :)
I’m sure when the time comes, you’ll know whether you want to proceed with medicine or not. Just go with what you feel most passionate about. Either way you’re studying for a very worthwhile and fulfilling career. Best of luck with it :)
Amy.
Human body anatomy. Artwork showing the anatomy of a standing human body. Bones of the skeleton, muscles of the limbs, and major organs are seen. At top is the brain (white) in the skull & spinal cord passing into the neck. The thorax contains the heart with arteries (red) and veins (blue); around the heart are the lungs with bronchiole air tubes. Beneath the lungs are lobes of the liver in the abdomen. The pancreas (yellow), gall bladder (green) and two kidneys (pink) with ureters are seen. The small intestine is coiled, occupying the lower abdomen. Muscle blocks (red) in the limbs enable movement, & these are attached to bones of the limbs, pelvis and shoulder, by white tendons.
Cross section of an umbilical cord
:D
Anonymous asked: Your blog is fascinating! Can you please post links to other interesting science blogs that you follow?
Hi! Thank you so much :)
I answered this about a month ago here. These are some of my favourite science blogs and are a big part of what I would reblog here! :)
Amy.
Case Discussion:
This case illustrates typical appearances of a cerebellar hemisphere haemorrhage.
Related articles
(via fuckyeahnarcotics)
[video]
HeLa cells treated with a compound so that distinct groups of proteins become visible. That is; tubulin, which is a generic family of proteins turns red, and DNA blue.
There’s more here, by the way.
Anonymous asked: Hi! Is it possible to get the histological picture of the penis blown up? Is the quality good enough, or do you know where I can get one that is? My best friend is turning 30 and this is the perfect gift!
Wow, sounds like an awesomely unique gift idea! I approve! :)
Would this be what you’re looking for? If you’re looking for a different view of it, let me know and I’ll see what I can find :)
