Homeostasis Homeostasis Is a technical term for the process of maintain a constant internal environment despite external changes. The internal environment‚ compromises; blood‚ tissue fluid‚ body cell contents and all the metabolic processes taking place. Constant in this instance is not absolute or fixed it is much more flexible and dynamic as it refers to the physical and chemical composition being kept within a limited range or variables for maximum efficiency‚ well-being of the whole body and
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secondary ridges. The primary and secondary ridges are interlocked with the dermis to offer support and strength to the friction ridge skin. ("Anatomy & Physiology of Adult Friction Ridge Skin") Friction ridge skins are comprised of sweat glands‚ epidermis‚ dermis‚ dermal papillae‚ primary ridge‚ secondary ridge‚ and pores. ("Anatomy & Physiology of Adult Friction Ridge Skin") Although the skin creates several appendages such as: hair‚ nails‚ sweat glands; the eccrine sweat gland is the only appendage
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Name the types of microscopes. Simple Microscopes Compound Microscopes Scanning Electron Microscope Transmission Electron Microscope #4. Identify these stains: (Functions and Reagents) Simple Stain- CULTURES: Staphylococcus epidermis slant Bacillus megaterium broth MATERIALS USED: Methylene blue‚ Distilled water‚ Slide‚ Inoculating Loop FUNCTION: To observe shape size‚ morphology‚ and arrangement. ---FROM SOLID: (slant) 1. Mark the smears on the underside
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A pressure ulcers is ‘ a localised area of cellular damage resulting from direct pressure on the skin causing ischawmia‚ or from shearing or friction forces causing mechanical stress on the tissues’ (Chapman and Chapman 1981). Common places for pressure ulcers to occur are over bony prominences‚ such as the sacral area‚ heels‚ hip‚ and elbow. (NICE 2005) Initially to maintain confidentiality the patient will be referred to as Mr Brown. Mr Brown has given permission for his nursing notes and
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ION OF CLASSIFICATION OF NON-CHORDATES UPTO CLASSES WITH SALIENT FEATURES Vanramliana Pachhunga University College Aizawl‚ Mizoram 1. Phylum Porifera: From the Latin porus for pore and Ferre to bear‚ hence an animal with with pores. ~5000 species. Characteristic features:- a) Multicellular; no true tissue; asymmetric; sessile b) spongin- protein fibers for structure; spicules for skeleton c) filter feeders using collar cells (choanocytes) & amoebocytes
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Skin and derivates Epidermis – covers surface; protects deeper tissues Keratinocytes – waterproofing Melanocytes – pigment –protects against UV light Dermis – Nourishes epidermis; provides strength; contains exocrine glands Collagenous tissue – strength Skin Derivates A. Hair– protection and warmth (vellus – fine un-pigmented hair: terminal hair – course and pigmented) B. Sebaceous Glands – Secrete oily substance that lubricates hair shaft and water proofs the epidermis C. Sweat Glands –
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Tifani Panek #546 Storyline for Video on Sponges -Sponges by Tifani Panek -What is a sponge? -When I say sponge‚ you may be thinking of... -Spongebob Squarepants -Or maybe even a synthetic cleaning sponge. But those are not the sponges I am talking about. -Sponges are simple‚ multicellular but beautiful filter-feeding animals. They are from the phylum porifera and are invertebrates that live in the bottom of the ocean and cannot move from their surface. -Sponges are also ancient creatures. 3
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PLATYHELMINTHES About Platyhelminthes Platyhelminthes are an ancient phylum and there is little information into how it evolved. Their evolutionary history remains unknown because soft-bodied organisms do not fossilize well. Scientists believe that the first flatworm began to evolve 550 years ago. Platyhelminthes otherwise known as “flatworms” have a wide variety of species within the phylum and have positive and negative effects on those who interact with them. Some examples of Platyhelminthes
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STEM AND LEAF CHARACTERIZATION OF Eucalyptus deglupta Austria‚ C.‚ Batenga‚ B.‚ Daysa‚ R.‚ Dela Rosa‚ J.‚ Rebong‚ C.1 1 Department of Biology‚ College of Science‚ University of Philippines Baguio Baguio City‚Philippines INTRODUCTION bole that reaches up to 240cm (Figure 1a). It has a multi colored bark that varies from green‚ yellow‚ bluish‚ purplish‚ pink and orange. It has a green under bark and right before exfoliation occurs‚ the bark changes to brownish maroon (Figure 1b). The colors
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Introduction A 45-year-old Caucasian female presented with a rapidly changing "black mole" on her left leg. Initially it was a flat brownish macule‚ which she had for many years. The patient reported that the lesion had become slightly raised with irregular borders over a period of 4 weeks prior to her presentation (see Figure 1). Upon questioning‚ the patient stated that she had received approximately 20 sessions of UV exposures per year for 5 consecutive years at tanning salons. She also mentioned
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