Involuntary muscle are found in internal organs such as the heart, and is a muscle which contracts without conscious control and is usually found in the walls of internal organs such as stomach and intestine and bladder and blood vessels. Involuntary muscle contains protein filaments, and doesn’t follow the pattern that is created in striated muscle and therefore does not produce the banding characteristics of striated muscle.
Voluntary Muscles are muscles attached to bones and the skeleton of the human body. Voluntary muscle is also known as striated, ‘striated’ meaning striped because each individual fibre has dark parts and light part, an example would be the animal meat seen in the butchers’. The light and dark parts in the meat or muscles are caused by proteins called myosin and actin.
Striated muscles or also know as the skeleton muscles, because it’s mainly attached to the bones. Striated muscle is muscle which can connect to bones from both ends of and therefore it can help move parts of the skeleton. The muscles are fibrous and dense tissues and their main function is to help with movement in the body. The movement striated muscle is controlled voluntarily, in contrast to involuntary muscles and cardiac muscles which are involuntarily moved.
Nerve tissue is responsible for sensing stimuli and sending back electrical signals all around the body.
Nerve tissues can be found in the Central Nervous System and the Peripheral system. The Central Nervous System consists of nerve tissues in the brain and spinal cord and the Peripheral system consists of nerve tissues around the whole body. Messages are sent through electrical signals to the body and every cell.
Something typical of nerve tissues is that they send and receive information. Nerve impulses have a domino effect. When a neuron receives an impulse it passes automatically passes it to the next neuron, which does the same hence the domino effect. The neurons pass the impulses to the right path after a chain of chemical events Message or signals are picked up by the axon nerve, the axon nerve works by connecting to other nerve tissues and passing information through the end of the axon (dendrite) which picks up the electrical signal from the other neurons.
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The next paragraph I will be writing about three tissues or more that s found in the stomach and the function or roles the play within the digestive system and the stomach itself. I will also be writing about the location of the stomach in the body and function of the stomach in the digestive system.
The functions of the digestive system are to break down our daily food molecules to a size where they could be delivered to cells and turn them into waste.
The location of the stomach is usual described as the abdominal organ lying just beneath the diaphragm on the left side. The function of the stomach is to store food and release enzymes like pepsin which break down food molecules, there are varies different acids that help digest food, however a watery mucus provides a protective barrier of epithelium tissue lining in the muscular wall of the stomach to prevent it being digested or destroyed by the enzymes. Involuntary muscles are also found in the walls of the stomach and also the beginning of the stomach and the end of the oesophagus. The ring muscle at the entry of the stomach remains constricted till the specialized neurons direct the involuntary muscles to open the stomach.
Areolar tissue is found in organs such as the nerves and stomach. Areolar tissue is located on the wall lining with the muscular coat in stomach; areolar tissue is a connective tissue, which consists of collagen, elastic fibres and reticular fibres. The function of this in the stomach is to support the movement in the stomach and connect other organs and bind under layer skin to the muscles and provide elasticity.
The function of the heart is to supply blood around the body and lungs. The heart brings in oxygenated blood to all cells in the body, and then blood is pumped through arteries. The veins bring deoxygenated blood to the cells of the lungs, which then are oxygenated, and then send it back to the heart. In this way, a continuous cycle is formed of the heart pumping oxygenated blood and deoxygenated blood out to their designated destinations, and therefore the heart maintains the circulatory system.
Cardiac muscle tissue is responsible for the beating and contracting of the atria. It causes the circulating of the blood around the body by creating a rhythmical beat. The Cardiac muscle is unique as it never tires and is only found within the walls of the heart and shows both signs of not being a smooth muscle tissue or skeletal muscle tissue. Cardiac muscle has stratified involuntary muscle tissue in the walls of the heart. The muscle tissue in the heart is involuntary because it’s not controlled by the brain and therefore carries out normal functions without instructions within internal organs e.g. beating of the heart.
Nerve Tissue – the nerve tissue has two systems, sympathetic and parasympathetic nervous system. The purpose of the sympathetic nervous system is to detect, if you’re under stress for example the sympathetic nervous system tells your heart to pump faster and supply more blood to your brain, when you feel nervous. The parasympathetic however is the nervous system that’s in use when a person is feeling normal; the parasympathetic system instructs the heart to beat at a normal pace. Nerve tissues contain voluntary muscle tissue, the voluntary muscles contract when it receives a nerve impulse from the central nervous system.
Blood Tissue
-Blood tissues are found usual in the heart or blood vessels, veins, arteries, arterioles, capillaries and venules. Blood tissue consists of 99% red blood cells, and 1% white blood cells. Blood tissue has varies functions, e.g. it controls the PH balance, removes toxin wastes from the body; it also dissolves gases (oxygen and carbon dioxide). Blood helps the heart function by circulating all the nutrients and oxygen to other organs in order for them to function properly. Blood is consider as connective tissue because it helps connect body systems together as it brings different organs much needed nutrients and oxygen.
Bibliography
Anatomy and Physiology for Health and Social Care[Type text]