Describe the structure of the alimentary canal of the human body in relation to its function Synopsis: Intro: * nutrition * Alimentary canal * 4 layers Body: * Buccal cavity * Oesophagus * Stomach * Small intestine * Large intestine Conc: Essay: Nutrition is the process of acquiring energy and materials for cell metabolism‚ including the maintenance and repair of cells and growth. In humans‚ digestion and absorption occur in the alimentary canal or gut
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SENSE ORGANS RECEPTORS (Sense organs) * Transducers of specific forms of kinetic energy * Change mechanical‚ electrical‚ thermal‚ chemical‚ or radiant energy into nerve impulses in sensory neurons Two major categories: * GENERAL RECEPTORS * Often exist as individual cells or receptor units * Widely distributed throughout the body * Most numerous such as: * touch‚ temperature‚ and pain: and * to initiate various reflexes necessary for maintaining
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canal. o Ectocervix is covered by the plushy‚ red columnar epithelium surround the os‚ which resembles the linking of the endoverical‚ and a shiny pink squamous epithelium continuous with the vaginal lining o The squamous columnar junction forms the boundary between these two types of epithelium o During puberty‚ the broad band of columnar epithelium encircling the os‚ called the ectropion‚ is gradually replaced by squamous epithelium. o The squamocolumnar junction migrates toward the os‚ creating
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in the basolateral spaces between lumenal epithelial cells‚ beneath the tight junctions (they are "inside" the epithelium‚ but not inside epithelial cells as the name may incorrectly suggest). Another important component of the GI immune system is the M or microfold cell. Mary Gorton Microbiology Research paper Page 2 M cells are a specific cell type in the intestinal epithelium over lymphoid follicles that endocytose a variety of protein and peptide antigens. Instead of digesting these proteins
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Anatomy of the Respiratory System Nose and Nasal Cavity The nose and nasal cavity form the main external opening for the respiratory system and are the first section of the body’s airway—the respiratory tract through which air moves. The nose is a structure of the face made of cartilage‚ bone‚ muscle‚ and skin that supports and protects the anterior portion of the nasal cavity. The nasal cavity is a hollow space within the nose and skull that is lined with hairs and mucus membrane. The function
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Our senses enable us to make sense of the world around us; they make our environment enjoyable by stimulating our desire to eat giving the body the vital nutrients it needs. They can also alert us to a fire before we see the flames‚ detect dangerous fumes and smell and taste rotten foods. Out of the five senses‚ it seems like taste is one of the simplest. There are no cones; rods or lenses‚ there are no tympanic membranes or miniscule bones. Our sense of smell in responsible for about 80% of
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“NURSING CARE MANAGEMENT OF PATIENT WITH ABDOMINAL OBSTRUCTION” CHAPTER 1: INTRODUCTION A) Background of the Study B) Rationale for choosing the case C) Significance of the study D) Scope and Limitation CHAPTER 2: HEALTH HISTORY A) Biographic Data B) Chief Complaint C) History of Present Illness D) Past Medical History E) Family History F) Physical Assessment CHAPTER 3: DISCUSSION OF DISEASE PROCESS A) Anaphysiology B) Pathophysiology C) Drug Study D) Diagnostic
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Reproduction Male sperm fuses with female egg. If tdf (a gene) is present‚ then the embryo develops testes and produces testosterone. Female Reproductive system • Female baby develops if tdf is not present. • Tdf – a gene located on Y chromosome; if girl‚ then two X chromosomes‚ hence no Tdf. • Female hormones: progesterone and estrogen ( both secreted by mother’s ovaries and placenta which allow female genetilia to develop. Parts of the female reproductive system:
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olfactory epithelium and the lamina propria. The olfactory epithelium contains the olfactory receptors‚ supporting cells‚ and basal (stem) cells. The surfaces of the olfactory organs are coated with the secretions of the olfactory glands. Olfactory Receptor The olfactory receptors are highly modified neurons. Olfactory reception involves detecting dissolved chemicals as they interact with odorant-binding proteins. Olfactory Pathways Axons leaving the olfactory epithelium collect
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stimulates retinal transport of taurine. The sites in mammalian retina where taurine transport is concentrated are‚ pigment epithelium‚ photoreceptors and neuronal amoxine cells. o In mammalian retina taurine transport is concentrated in neuronal amoxine cell and photoreceptor and pigment epithelium. It was found that taurine transport fall by 72% if the pigment epithelium was removed from choroid. In human transport of taurine across the pigment epithelia is required for maintaining electrophysiological
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