Anatomy and Physiology I Exam Review‚ Units 1-4 1. The smallest structures that biologists consider being alive are A. organisms. B. organs. C. macromolecules. D. cells. E. organelles. Review levels of organization. 2. Cells contain smaller structures called ___ that carry out their metabolic functions. Review the structure of the cell and know the functions of each of the organelles. 3. Many physiological processes are controlled by self-correcting ___ loops.
Premium Organism Human anatomy Biology
typically permits the membrane potential to reach the threshold potential at which it fires the next action potential (pacemaker potential). Thus‚ the pacemaker potential is what drives the self-generated rhythmic firing. This is known as cardiac muscle automaticity.[2] Pacemaker potentials are fired by sinoatrial node (SAN)‚ but also by the other foci. However‚ the last ones have firing frequencies slower than the SAN’s. When other foci attempt to fire at their intrinsic rate‚ they can’t because
Premium Action potential
Abstract The purpose of this experiment was to use the muscle tension and the electrical activity in the dominant and non-dominant forearm muscle‚ the flexor digitorum superficialis‚ to analyze the determinants of muscle tension and fatigue‚ and the reasons as to why differences may occur between the dominant and non-dominant arm. The generation of tension in a muscle is determined by the major type of motor unit being recruited‚ as well as the rate in which action potentials are being fired. A subject
Premium Muscle Muscular system Cardiac muscle
talk about how BUILDING MUSCLE INCORPORATES MANY DIFFERENT FACTORS BUT CAN ULTIMATELY BE ACHEIEVED BY NUTRION‚ WEIGHT TRAINGING‚ AND ADDING SUPPLEMENTS TO YOUR DAILY ROUTINE. Let’s start with nutrition. There are hundreds of fad diets out there today‚ however the foundation of a successful nutrition plan begins a healthy calorie controlled diet. You must be eating a consistent amount of daily calories. This intake should be substantial enough to allow the body to build muscle. Undereating is one of
Premium Muscle Bodybuilding Metabolism
Amanda Fallon Professor Jed Wolfson Anatomy and Physiology 1 October 27‚ 2011 Rhabdomyolysis: Disease of Muscular Breakdown Rhabdomyolysis is the breakdown of damaged muscle tissues resulting in the release of muscle fiber contents into the bloodstream (Patel M.D.). This disease occurs when there is damage to the skeletal muscle. The breakdown products of damaged muscle cells‚ such as myoglobin‚ are harmful to the kidneys and frequently result in kidney damage or even kidney failure
Free Muscle Muscular system Kidney
Sample Physiology MCQs 1. Compound action potentials can be graded responses. True 2. The sciatic nerve contains axons of both afferent and efferent neurones. True 3. The absolute refractory period of an action potential is the period after an initial stimulus when it is impossible to evoke another action potential with a second stimulus. True 4. The refractory periods of individual axons are important as they dictate the maximal action potential firing rate of a neuron. True 5. Compound action
Premium Action potential Skeletal muscle Muscle
1. Discuss the relationship between distribution of muscle fiber type and performance. How might exercise training modify or change a person’s fiber-type distribution? Skeletal muscles contain multiple fiber types that are distinguished by their different myosin ATPase speed‚ and the development of their SR. The two main fiber types are type I and type II fibers. Type II fibers have a faster ATPase and a more developed SR than type I fibers. Type II fibers are also part of a larger motor unit‚
Premium Muscle Physical exercise Exercise physiology
The Aging Musculoskeletal System The human musculoskeletal system is the organ system that gives humans the ability to physically move‚ by using the muscles and skeletal system. It consists of the muscular system and the human skeleton. Bones are connected to each other at the joints by ligaments or cartilage and skeletal muscle is attached to bones‚ usually by tendons. Bones mass or density is lost as people age‚ especially in women after menopause. The bone loses calcium and other minerals. Bone
Premium Bone Muscle Skeletal system
“The Cougar Physiology” 10/15/2012 The Cougar Physiology Kingdom: Animalia‚ Phylum: Chordata‚ Class: Mammalia‚ Order: Carnivor‚ Family: Felidae‚ Genus: Felis‚ Species: Concolor‚ or otherwise known as‚ Cougar. Cougars are also known as the Mountain Lion or puma and have the largest natural range distribution throughout the western hemisphere. This paper will cover characteristics of the cougar‚ the ancestry to the Cougar‚ and what adaptations the cougar has gone through to survive in its habitat
Premium Felidae Cougar Hunting
Lab 6 Biomechanics of Frog Skeletal Muscle I. Purpose This exercise is designed to demonstrate some mechanical and physiological properties of skeletal muscle using the gastrocnemius muscle of a frog. II. Performance Objectives At the end of this exercise the student should be able to: 1. Define minimal (threshold)‚ subminimal‚ maximal‚ and supramaximal stimulus. 2. Explain what is meant by a “graded” response. 3. Draw a diagram of the setup used in this lab exercise. 4. Calculate the
Premium Muscle contraction Muscle Muscular system