Muscle contractions happen when muscle fibers are stimulated‚ which can cause one of many types of contractions. Isometric contractions‚ which means that tension happens in the muscle but there is no change in muscle length‚ therefore there is no movement of the muscle itself. An example of Isometric contractions would be strength training‚ such as holding a weight still‚ which happens in the biceps brachii. The biceps brachii the gets more tension‚ but the muscle length stays the same. As for isotonic
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August 27th 2013 Title: Chapter 2 Note SECTION 1 Experimental Method Science usually begin with observation => a piece of information gathered by using our senses To extend their senses‚ science often use tools such as ruler‚ microscopes … etc Hypothesis => a testable idea or explanation that lead to a investigation Prediction => Logical statement about wat will happen if the hypothesis is correct Observation => Question Hypothesis => Answer It is important that a hypothesis
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our body is exactly offset by their loss. When acid–base balance occurs‚ the pH of body fluids stays within normal limits. Stopping a reduction in pH is the main problem‚ because our body produces a variety of acids during normal metabolic tasks. 2. Why does maintaining fluid balance in older people require a higher water intake than in a normal‚ healthy adult under age 40? Water encompasses 55% in elderly people and is vital for cellular homeostasis and life. With respect to heat stress‚ water
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ANATOMY & PHYSIOLOGY of the EYE Even though the eye is small‚ only about 1 inch in diameter‚ it serves a very important function -- the sense of sight. Vision is by far the most used of the five senses and is one of the primary means that we use to gather information from our surroundings. More than 75% of the information we receive about the world around us consists of visual information. The eye is often compared to a camera. Each gathers light and then transforms that light into a "picture
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Anatomy and physiology of the brain and spinal cord The brain is a spongy organ made up of nerve and supportive tissues. It is located in the head and is protected by a bony covering called the skull. The base‚ or lower part‚ of the brain is connected to the spinal cord. Together‚ the brain and spinal cord are known as the central nervous system (CNS). The spinal cord contains nerves that send information to and from the brain. The CNS works with the peripheral nervous system (PNS). The PNS
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When trying to reach your muscle growth goals‚ it is important that you have a customized body building workouts that are meant for you. What it means is that you have to take into consideration of your body type and genes‚ and how your metabolism rate is like when determining your workout routine as well as your muscle building diet. Following blindly without being able to improvise and improve will be as effective as compared to body building workouts just for you. One common mistake that most
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Muscle Contraction & Excitation Muscle excitation takes place when there is a synaptic transmission and induction of an impulse. There are six steps that take place during muscle excitation. (1)The action potential travels down the somatic motor neuron axon reaching the synaptic bulb causing calcium ions to flow into the synaptic bulb. (2)The increase of calcium in the synaptic bulb causes the synaptic vesicles to undergo exocytosis. (Exocytosis a process that allows large molecule to leave
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1. Label a diagram of the respiratory system?? 2. Describe the process of breathing?? Breathing consists of two phases. The first is inspiration and the second is expiration. During inspiration‚ the diaphragm and the intercostal muscles contract. The diaphragm moves downwards increasing the volume of the thoracic cavity and the intercostal muscles pull the ribs up expanding the rib cage and further increasing this volume. This increase of volume lowers the air pressure in the alveoli to below
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Muscle adaptations to the increase in energy demands at the start of exercise Introduction The transition from rest to exercise is associated with a huge upsurge in energy expenditure‚ due primarily to skeletal muscle contractions (Connett & Sahlin‚ 1996). Contractions require energy in the form of adenosine tri-phosphate (ATP). ATP stores in muscle are around 8mmol/l and are exhausted within 2s of exercise (Connett & Sahlin‚ 1996). To continue exercise and maintain ATP homeostasis‚ ATP
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Chameleons Organism Physiology Brianna Kibler October 1‚ 2014 Principles of Biology BIO/101 Matthew Scholten Organism Physiology We know that an organism is anything that is living and can function by itself. This paper will help understand chameleons and how they have evolved to adapt to their surroundings. It will also discuss their physical features inside and out. Myths and facts will be revealed‚ as well as a few comparisons between sexes. Though there are many species of chameleons
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