Hans Selye defines stress as the wear and tear of the body. Prolonged stress or chronic stress can lead to the wear and tear of the immune system. In his model, which is known as the General Adaptation Syndrome (GAS), he described the body’s response to stress in three stages which are:Alarm reaction, Resistance And Exhaustion. The first stage is what stirs the body for fight-or-flight response. The second stage is due to the recurrence of the first stage and if it persists, cortisol (...
ABSTRACT The research study investigated the challenges of media sponsorship on sport development in Nigeria. To this end, the method used was survey method while questionnaire where administered to the respondents of the study as the instrument of data gathering exercise, the has a great effect in the world of sports. Sports performance and achievement has been the avenue through which great nations of the world exhibit their supremacy over...
Rhythm controllers in the brainstem 1. Medulla Dorsal respiratory group – associated with inspiration Ventral respiratory group – associated with expiration. Pre-Botzinger Complex - pattern generator, also ventral 2) Pons Apneustic center – has an excitatory function Pneumotaxic center – can inhibit inspiration Other regions of the brain that can affect respiration 1. Cortex Can exercise voluntary control...
Introduction The kidneys play a major role in the control of the consistency of the internal environment. The blood passing through the kidneys is first filtrated (glomerular filtration) so that all the constituents, except blood cells and plasma proteins, go into the microtubular systems. In the kidneys the useful substances are quickly reabsorbed but unwanted substances escape filtration and are actively excreted in urine. (Krungkrai S, 2001). However, renal function tests are important t...
A human teratogen is an agent that alters the growth or structure of the developing embryo or fetus, thereby causing birth defects. The first human teratogen identified in 1941 by an ophthalmologist, Norman Gregg, was maternal rubella infection in pregnancy, which produced a triad of defects (cataracts, heart malformations, and deafness) in the infants (Gregg, 1991). Teratogens are environmental agents such as drugs, viruses, lack of nutrients, and physical or chemical elements that upon ...
Diapedesis is the means by which cells cross the walls of intact vessels. For those interested in assessing new methods for cancer therapy, I believe there are great strides to be accomplished if more efforts are concentrated on this phenomenon. CHAPTER ONE: INTRODUCTION 9 CHAPTER TWO: ADVANCEMENTS IN DIAPEDESIS, THE PRECEEDING STEPSAND HOW THEY ARE REGULATED 112.0.1 ADVANCEMENTS IN DIAPEDESIS 112.0.2 CLONING 122.0.2.1 CLONING AND DIAPEDESIS 122.1 SITES WHERE DIAPEDE...
The spermatogenic and steroidogenic functions of the testes is finely regulated by the brain (on stimulation), the master endocrine gland, and local factors produced by the testes. During intrauterine life the proliferation of primitive germ cells and the formation of the testes is carefully directed by testosterone, secreted by leydig cell on activation by human chorionic gonadotropin (HCG) released by the placenta. After birth, hormonal regulation of testes stop and the testes remain quicen...
Abstract Adiponectin first described in 1995 as a peptide of adipose tissue that becomes dysregulated in obesity. Adiponectin is an adipokine produced and secreted exclusively by both white adipose tissue (WAT) and brown adipose tissue. It accounts for about 0.01% of the total plasma protein in humans. It is the most abundant protein secreted by the adipose tissue.The role of adiponectin is mediated by receptors known as adiponectin receptors 1 and 2 (Adipor1 and Aipor2). These receptors ha...
ABSTRACT Orexins are recently discovered neuropeptides synthesized by neurons located in the posteriolateral hypothalamus. There are about 10,000 to 20,000 of these neurons in the hypothalamus and their axons extend throughout the brain and spinal cord where their receptors are located. The word Orexin is a Greek word reflecting orexigenic (appetite stimulating) activity of hormone. There are two types of Orexin – Orexin-A and Orexin-B – and these are essentially the same as hypocre...
ABSTRACT Isolated organs or tissues are body parts, organs, systems or tissues separated from the body and placed in an artificial nutrient medium similar to blood plasma in salt composition and osmotic pressure and temporarily retaining their principal functional properties. They are used to study certain aspects of organ activity, elucidate the action of medicinal substances and poisons, provides researchers with convenient biological models that are independent of the systemic influen...
ABSTRACT Insulin treatment is the use of insulin and similar proteins to treat diseases including diabetes and its acute complications as an effective way of lowering blood glucose level in individuals with impaired Islet beta cell functions. The Islets (Island) of Langerhans are small clusters of cells scattered within the pancreas of most vertebrates to bring about the secretion of the polypeptide hormone, Insulin, which is responsible for the evacuation of excess glucose in the blood strea...
Humans share an intimate and life-long partnership with a myriad of resident microbial species (fungi, protists and viruses), collectively referred to as the microbiota (Sampson & Marmanian, 2015). The microbiome co-evolved with its human host (Chrobak et al., 2016) and istransferred from the mother to the baby duringlabor, with method of delivery, diet, drugs and medications (especially antibiotics) as the major contributing factorto the process of microbiome developmentin the infant (Sekiro...
TABLE OF CONTENTS 1. INTRODUCTION 2. TYPES OF ENDOCRINE GLAND 3. REPRODUCTION AND ENDOCRINE CONTROL 4. EFFECTS OF ENDOCRINE ON THE REPRODUCTIVE SYSTEMS 5. ENDOCRINE CONTROL OF MALE REPRODUCTION 6. ENDOCRINE CONTROL OF FEMALE REPRODUCTION 7. THE OVARIAN CYCLE AND THE MENSTRUAL CYCLE 8. THE ACTIVITIES OF ENDOCRINE IN MENOPAUSE 9. CONCLUSION 10. REFERENCE
INTRODUCTION The Insourcing and/or Outsourcing decision is referred to in purchasing as sourcing policy decision and it is one of the most important decision points for any organization because it has a multiple and web like effect on the life of the organization. Managers of businesses most especially manufacturing organizations faces a series of important and determining questions which must be answered correctly if the organization is to succeed in midst of competition. The Purchasing Ma...