Notes understand p26 Reflex action Reflex arc pathway synapse p28 Menstrual cycle FSH‚ oestrogen‚ LH‚ ovulation p30 Artificial control of fertility Contraceptive pill IVF treatment p32 Controlling conditions Water & ions – kidneys Temperature Blood glucose – insulin p34 Controlling fertility Attempt Questions B1a. 2. Healthy eating p38 Diet and exercise Components of balance diet Energy requirements Metabolic rate Notes understand
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the nephron in function? THREE EXCRETORY ORGANS: KIDNESY‚ LUNG‚ SKIN UREA MUST BE MIXED IN WATER TO BE EXCRETED BY THE NEPHRON AND SKIN. THE NEPHRIDIA OF THE EARTHWORM IS SIMILAR IN STRUCTURE/FUNCTION TO THE NEPHRON OF A VERTEBRATE MAMMAL KIDNEY. 3. How are the excretory wastes carbon dioxide and water produced in the body? CARBON DIOXIDE IS AN EXCRETORY WASTE FROM RESPIRATION. IF YOU FOLLOW THE CARBONS‚ THEY ORIGINATED WITH ORGANIC FOOD MOLECULES. WATER IS AN EXCRETORY WASTE FROM
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body‚ and insulin takes the sugar from the blood into the cells. When sugar builds up in the blood instead of going into cells‚ it can cause two problems: cells may be starved for energy‚ and over time‚ high blood sugar levels may hurt your eyes‚ kidneys‚ nerves‚ or heart. Type II diabetes is the most common form of diabetes. In type II diabetes‚ either the body does not produce enough insulin or the cells ignore the insulin. Insulin is necessary for the body to be able to use sugar. Type II
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Dietary Supplements Report SCI 241 May 16‚ 2013 Dr. Tira Hancock Dietary Supplements Report Dietary supplements are products intended for ingestion as supplements to the diet. Dietary supplements can have vitamins‚ herbs‚ enzymes‚ extracts‚ plant substances‚ amino acids‚ botanicals‚ and concentrates. Supplements are beneficial to the body because they can enhance the nutrients in foods‚ aid in weight loss‚ provide energy‚ cure illnesses‚ optimize health‚ and protect against diseases. If a
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1. Cells structure and Organisation 1.1 Plant Cells and Animal Cells: Fig.1.0 Basic structures of an animal cell and a plant cell. 1. • • • Cell wall: Porous. Permeable. Non-living structure made of cellulose. 2. Cell membrane/Plasma membrane • Semi-permeable/Partially permeable(Only certain parts can pass through it and some aren’t able). 3. • • • Cytoplasm Contains cell organelles. Food substances. Mostly H2O. 4. Vacuole/Sap vacuole/Large central vacuole • Mostly H2O. 5. Nucleus •
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Organs * Kidneys are major excretory organs * Urinary bladder is the temporary storage reservoir for urine * Ureters transport urine from the kidneys to the bladder * Urethra transports urine out of the body Kidney Functions * Removal of toxins‚ metabolic wastes‚ and excess ions from the blood * Regulation of blood volume‚ chemical composition‚ and pH Kidney Functions * Gluconeogenesis during prolonged fasting * Endocrine functions * Renin: regulation of blood pressure and kidney function
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P4 – Explain the role of the kidney in the homeostatic control of fluid balance Homeostasis is how our body works to keep the internal environment constant. The kidneys play a role in the control of fluid balance. For this assignment I will be discussing the gross anatomy of the renal system and the kidney. Renal System The renal system is a group of organs that work together to produce‚ store‚ and release urine. It consists of 2 kidneys‚ ureters‚ the urinary bladder‚ urethra and renal vessels which
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5) cells in the brain sense an increase in the concentration of the blood plasma. They then notify the pituitary gland to release the hormone‚ ADH. This hormone causes the kidney to save water‚ which lowers the concentration of the plasma. ALL of the following are TRUE for this scenario EXCEPT: xxxxa. The kidney acts as an effector in this feedback loop.xxxxxxxxxxx true b. The osmometer cells act as receptors in this feedback loop.????? c. The stimulus in this feedback loop is an
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® keep it simple science Copying is permitted according to the Site Licence Conditions only HSC Biology Topic 1 MAINTAINING A BALANCE What is this topic about? To keep it as simple as possible‚ (K.I.S.S.) this topic involves the study of: 1. ENZYMES & HOMEOSTASIS 2. TEMPERATURE REGULATION 3. INTERNAL TRANSPORT SYSTEMS 4. EXCRETION & WATER BALANCE but first‚ an introduction... Living Things are Made of Cells Homeostasis All living things are composed of microscopic units
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Fluid‚ Electrolyte‚ and Acid-Base Balance: Introduction to Body Fluids 1. a. Where are fluids absorbed? Into the plasma in the intestine. b. Where are excess fluids and electrolytes lost? The kidneys remove them from the body through urine. 2. Name four of the six functions of water. a. Temperature regulation b. Protective cushion c. Lubricant d. Solvent 3. a. The amount of water in the body depends on the amount of fat tissue.
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