water and mineral ions from the roots phloem - transporting sugars and other small organic molecules to different parts of the plant. epidermis - function is to protect the inner layers of cells - is a close fitting layer on both the top and bottom of the leaf. epidermal cells sometimes secrete a waxy cuticle - reduces evaporation from cells. lower epidermis there are stomata each stoma is surrounded by guard cells - can open/close the space between them. guard cells contain chloroplasts /
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and little to none occurs in stems‚ etc. The parts of a typical leaf include the upper and lower epidermis‚ the mesophyll‚ the vascular bundle(s) (veins)‚ and the stomates. The upper and lower epidermal cells do not have chloroplasts‚ thus photosynthesis does not occur there. They serve primarily as protection for the rest of the leaf. The stomates are holes which occur primarily in the lower epidermis and are for air exchange: they let CO2 in and O2 out. The vascular bundles or veins in a leaf are
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important role in protection and maintenance of body temperature and fluids (Cancer Treatment Center of America‚ 2007). According to the video‚ the skin is composed of three layers with each layer having different types of cells. The first layer is the Epidermis which is composed of basal‚ squamous‚ and melanocytes cells‚ its function is to shield and defend the internal layers of tissues and organs from having too much contact to UV sunlight. The second layer is the dermis and it is composed of “blood vessels
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Osmolarity TITTLE: practical of estimation of osmolarity in tissues by bathing samples in hypertonic and hypotonic solutions. INTRODUCTION: Osmolarity is the osmolar concentration of plasma and is proportional to the number of particles per liter of solutions shown as (mmol/l). It is derived from the measures Na+ and K+‚ urea and glucose concentrations. Since the volume of solution changes with the amount of solute added also it change in temperature and pressure‚ osmolarity we can say it’s
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Super LASER Hair Removal Super IPL is the most recent fourth era of IPL innovation‚ an innovation for changeless hair removal which is having a clearing achievement. The framework consolidates laser innovation and the advantages of the throbbing light technique accomplishing for all intents and purposes easy outcomes. Indeed‚ even hairs which not long ago have been troublesome or even difficult to be evacuated‚ can now be dealt with. "In Motion" speaks to a leap forward in perpetual hair removal
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A rose is a woody perennial of the genus Rosa‚ within the family Rosaceae. There are over 100 species. They form a group of plants that can be erect shrubs‚ climbing or trailing with stems that are often armed with sharp prickles. Flowers vary in size and shape and are usually large and showy‚ in colours ranging from white through yellows and reds. Most species are native to Asia‚ with smaller numbers native to Europe‚ North America‚ and northwest Africa. Species‚ cultivars and hybrids are all widely
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STEVENS-JOHNSON SYNDROME: PATHOPHYSIOLOGY‚ ETIOLOGY‚ DIAGNOSIS AND MANAGEMENT. Roberto Carmona Florida International University Abstract: Steven Johnson Syndrome is an inmune disease charactherized by a detachment of the epidermis from dermis. It could be fatal and the pathophysilogy involves a complex hypersensitivity reaction with the participation of T lymphocytes that induce keratinocyte’s apoptosis. The syndrome can be cause by drigs‚ infections and malignancies. The diagnosis
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temperature. c. It regulates the body temperature by thermo regulation and sweating. III. The Integumentary system’s main contribution to homeostasis is the ability to regulate body temperature. IV. The skin consists of the epidermis‚ dermis and the hypodermis. a. The epidermis is the outer layer. b. The dermis is the middle/second layer. c. The hypodermis is the layer (fatty) just under the skin The integumentary system also consists of epithelial membranes‚ accessory structures of the skin
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BSC 215 Spring 2014- Exam 2 Required Reading and Study Guide. The ‘required reading’ sections below include material that will be covered on exam 2. Here is an effective way to approach your required reading: BEFORE EACH CLASS: Read the assigned text for the chapter that is listed in the “required reading” Sections below. For this first read‚ it is not necessary that you attempt to understand everything in the required reading. It is more important that you read for the “big picture” concepts
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DATE: 2011/09/27 LAB NO.: 4 SYLLABUS TOPIC: Cellular structure AIM: To draw a tissue map of a dicotyledonous root. APPARATUS AND MATERIALS: Microscope‚ slides of the dicotyledonous root‚ and drawing materials such as pencils‚ ruler‚ and an eraser. METHOD/PROCEDURE: -The microscope was set on the tabletop (a flat‚ sturdy surface) where there was plenty of room to work with and was plugged into a power source. -The slide of the specimen (dicotyledonous root) was placed onto the stage of the
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