View allAll Photos Tagged vascular
In vascular plants, the root is the organ of a plant that typically lies below the surface of the soil. However, roots can also be aerial or aerating (growing up above the ground or especially above water). Furthermore, a stem normally occurring below ground is not exceptional either (see rhizome).Therefore, the root is best defined as the non-leaf, non-nodes bearing parts of the plant's body. However, important internal structural differences between stems and roots exist.
The first root that comes from a plant is called the radicle. The four major functions of roots are 1) absorption of water and inorganic nutrients, 2) anchoring of the plant body to the ground, and supporting it, 3) storage of food and nutrients, 4) vegetative reproduction. In response to the concentration of nutrients, roots also synthesise cytokinin, which acts as a signal as to how fast the shoots can grow. Roots often function in storage of food and nutrients. The roots of most vascular plant species enter into symbiosis with certain fungi to form mycorrhizae, and a large range of other organisms including bacteria also closely associate with roots.
When dissected, the arrangement of the cells in a root is root hair, epidermis, epiblem, cortex, endodermis, pericycle and lastly the vascular tissue in the centre of a root to transport the water absorbed by the root to other places of the plant.
Further info: en.wikipedia.org/wiki/Root
Photo taken at Wallington House and Estsate whilst walking through the woodland.
Vascular Plants of the Osa Peninsula, Costa Rica
sweetgum.nybg.org/osa/index.php
Los Charcos de Osa
RA#15679 osa_00120
My mum has vascular dementia. We're very lucky in that we haven't lost the essence of who she is, but it's still sad that she doesn't know our names, or sometimes quite who we are. Mum was a great amateur dramatic actress and she has always enjoyed singing. Now, everything is a song, albeit with many repetitions!
Taken at Restaurant Sixty Six, Ramsgate, Kent.
Olympus om1, Zuiko 50mm f1.8, Kodak Ultramax 400.
Vascular Plants of the Osa Peninsula, Costa Rica
sweetgum.nybg.org/osa/index.php
Los Charcos de Osa
es-la.facebook.com/loschardecososa
RA#16941 osa_01702
Vascular Plants of the Osa Peninsula, Costa Rica
sweetgum.nybg.org/osa/index.php
Los Charcos de Osa
RA#15678 osa_03061
Vascular Plants of the Osa Peninsula, Costa Rica
sweetgum.nybg.org/osa/index.php
Los Charcos de Osa
RA#15678 osa_03061
Vascular Plants of the Osa Peninsula, Costa Rica
Vascular Plants of the Osa Peninsula, Costa Rica
sweetgum.nybg.org/osa/index.php
Los Charcos de Osa
CRTMRL
osa_01303
Vascular Plants of the Osa Peninsula, Costa Rica
sweetgum.nybg.org/science/projects/osa/
RA#16507 osa_02745
A macro-photography close-up of a cottonwood tree leaf skeleton - showing its vascular system. (After a leaf falls to the ground, microbes in the soil consume the leaf's soft tissue and leave only the cellulose and lignin skeleton.) The leaf's vascular network can now easily be seen. This is a back-lighted version. See other versions below.
The leaves I've photographed were skeletonized through natural decay, and were hand-picked from thousands of leaves. Here's how this natural process works. Included are several links that describe how you can artificially skeletonize new leaves by boiling them in alcohol, followed by a soaking in NaOH (Sodium Hydroxide or lye). Here is another technique.
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I just self-published my first photo book (photos of the Grand Teton NP). You can see a preview of it at my blog, Your Photo Vision. Since this is a blog read by photographers and wanna-be photographers, I also discuss the advantages and pitfalls to self-publishing through the new print-on-demand format. I'd love to hear your comments.
Vascular Plants of the Osa Peninsula, Costa Rica
sweetgum.nybg.org/osa/index.php
Los Charcos de Osa
CRTMRL
osa_01303
Vascular Plants of the Osa Peninsula, Costa Rica
sweetgum.nybg.org/osa/index.php
Los Charcos de Osa
RA#13878 osa_02066
Vascular Plants of the Osa Peninsula, Costa Rica
sweetgum.nybg.org/osa/index.php
Los Charcos de Osa
RA#15467 osa_00326
Vascular Plants of the Osa Peninsula, Costa Rica
sweetgum.nybg.org/osa/index.php
Los Charcos de Osa
RA#15467 osa_00326
I am at the hospital for a vascular test. The hallway between two exam rooms is only as wide as a parking space, and two patients in stretchers have just been delivered, blocking me in. I'm parked in a chair in a 6' x 6' square of waiting room. I am next to the air conditioning unit, and my nose is runny, so I move to another of the four seats and find myself face to foot with a patient. The rest of him is in the exam room, the curtain of which has caught on one of his feet and lifted the sheet covering it. I am so close that I sit sideways.
The young female technician talks to him behind the curtain, and he answers in an old man's voice, which is perfectly appropriate, because he has an old man's foot. It is not like a lady's foot or a child's foot or even my husband's foot. It is a blue-ish pad of flesh with gnarly toes. Despite my dislike of feet, especially ones that look like this, with unkempt toenails hard as elephant tusks, I wonder about him. Where are the children or wife to rub those scaly feet, to clip those nails to keep them from scratching him in the night?
Occasionally the foot moves a little, and whether it's coyly or shyly or just to reposition, I can't tell. I'm betting he has other things on his mind than his exposure. I remember some sicknesses, the total absence of modesty. Because you don't care what's poking out of a curtain or even the back of your robe when you're puking from the pain. This is what some people think is a loss of dignity.
Certainly, people think, it's undignified to be in pain. Better to be full of sedatives and parked quietly by the wall, like the other patients here, trach tube covered with an oxygen mask, bag of vitamin-B-colored urine dangling by the side of the stretcher.
But that's undignified. What's undignified is that two orderlies clunk the left stretcher twice, and no one says excuse me, even reflexively. What's undignified is the young woman talking on her cellphone as she enters the elevator trailing an old, hunched over, moaning woman from her arm and doesn't stop talking for a moment, even as she drags the moaning woman from the elevator at the third floor.
I never see who belongs to this foot. I only know that I see it and I feel guilty for having walked in here myself, in these 12-year-old Steve Madden Olives, brown with a neat stitched flower. They are falling apart. But I am not. I am hale and hearty.
I didn't even park in the garage. I walked a quarter mile around the hospital. I trimmed my toenails last night before a bath. I got in the tub myself, without a metal bar.
I take my shirt off so the technician can look under my arms for an anomaly, which she doesn't find. I put my arms in different positions and lose my pulse. When I am finished, the foot and the man attached are gone. But I have not forgotten him.
He might have been immodest. He was not undignified.
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This photo will also be my contribution to Take a Class with Dave & Dave.
"Assignment 2. Industry. Cybergabi had this wonderful idea. I leave it to you how you want to show us industry, I'm hoping for the comically creative to the sublime.
I chose this for industry because medicine is one of the biggest industries in this country, possibly second only to war. Perhaps the things we see as lack of dignity are the result of our being treated in an undignified way by the medical establishment, even accidentally. The lab tech didn't know her patient's foot was in the hallway. The orderly didn't know his patient, hooked up to tubes, could feel the clunk against the wall, would indeed wince. Here we were, four patients crammed into a tiny space like extra meat in the freezer, another two stretchers on their way.
I understand the tests are necessary. People ask what was done before tests. Well, people died. That's what. And some of them might not have been ready to go by physician guess.