Running Head: CARIOVASCULAR SYSTEM Cardiovascular System BSC1011 Advanced Biology Tuesday‚ January 17‚ 2012 Cardiovascular System The heart weighs 300 grams and is shaped like a grapefruit and has two atria‚ two ventricles‚ and four valves receive blood from both venae cavae and the four pulmonary veins‚ and throw it into the aorta and pulmonary trunk. The heart pumps blood to 9 liters per day‚ making from 60 to 160 beats per minute. The heart is covered with
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with very obvious striations‚ voluntary via nervous system controls‚ attach to bones for movement‚ slow to fast contractions Cardiac – branching chains of cells‚ uninucleated‚ striated‚ involuntary‚ found only in the heart‚ slow rhythmic contractions Smooth – single‚ fusiform‚ uninucleated‚ no striations‚ involuntary‚ can stretch‚ found mostly in walls of hollow visceral organs but not the heart‚ very slow contraction The muscular system: The function of muscle tissue is to contract or shorten
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The respiratory system is an intricate network of organs all working together to insure a constant flow of gases‚ oxygen and carbon dioxide‚ to keep the body functioning at rest or during exertion’ (ehow). The respiratory system is made up of the nose‚ trachea‚ bronchi‚ diaphragm and lungs. The aim of this assignment is to look at the structure and functions of the respiratory system and also provide an illustration of the respiratory system.. The lungs are an integral part of the human body‚
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The musculoskeletal system includes bones‚ muscles‚ and connective tissues that all work together to provide the framework for the body‚ create body movements‚ store minerals and lipids‚ produce blood cells‚ and protest the body’s organs. The bones‚ muscles‚ and connective tissue comprise approximately sixty percent of the body’s mass. There are 206 bones and about 700 named muscles of three different types: skeletal‚ cardiac and smooth muscles (Taylor). Musculoskeletal disorders consist of minor
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NERVOUS SYSTEM The nervous system consists of the brain‚ spinal cord‚ sensory organs‚ and all of the nerves that connect these organs with the rest of the body. Together‚ these organs are responsible for the control of the body and communication among its parts. The brain and spinal cord form the control center known as the central nervous system (CNS)‚ where information is evaluated and decisions made. The sensory nerves and sense organs of the peripheral nervous system (PNS) monitor conditions
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nervous system consists of the brain‚ spinal cord‚ and a complex network of neurons. This system is responsible for sending‚ receiving‚ and interpreting information from all parts of the body. The nervous system monitors and coordinates internal organ function and responds to changes in the external environment. This system can be divided into two parts: the central nervous system and the peripheral nervous system. Let ’s take a look at the central nervous system. Central Nervous System The central
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Immune System The immune system is the body’s defense against infectious organisms and other invaders. Through a series of steps called the immune response‚ the immune system attacks organisms and substances that invade body systems and cause disease The main way that your skin protects you against disease is through acting much as armor does to knight. The skin creates an impermeable layer that separates your body’s internals from the disease causing bacteria and viruses outside of you. Of course
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The Cardiovascular System The cardiovascular system consists of a heart and an enclosed system of blood vessels categories into arteries‚ capillaries and veins. The heart is a muscle about the size of the fist; its wall is made up of a muscle known as the Cardiac Muscle‚ and is located between the two lungs and lies left of the middle of the chest (cliff notes). A fibrous covering known as the pericardium which surrounds around the whole heart holds the heart in place but allows it to move as
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DIGESTIVE SYSTEM Digestion is a process of breaking down complex food molecules into simple ones‚ suitable for absorption and their subsequent utilization in our body PURPOSE to convert complex food molecules into simpler ones‚ suitable for absorption and utilization production of energy‚ necessary for survival & vital chemical activity growth & development of the body repairing function reproductive function lactation FUNCTION to keep the
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The Muscular System: Skeletal Muscle Tissue 1. Fill in the characteristics of the three muscle types: |Muscle Type |Cardiac |Skeletal |Smooth | |Shape of cell |Branching Cell |Elongated Cell |Spindle Shaped Cell | |# of nuclei |Single Central Nucleus |Multiple Peripheral Nuclei |Single Central Nucleus | |Striations |Visible
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