Describe the role of the CNS with regard to swallowing. What is the stimulus? Nerve signals tell the brain what is the right thing to eat such as temperature and size and then causes saliva to be produced and moistens the food and forms the bolus which is then pushed down the throat after the CNS send the signal to contract smooth muscle 6. a. What are the components of the ANS (long) neural reflexes? Vagus nerve which supplies the parasympathetic fibers to most parts of the GI.
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the eyeball that surrounds the optic nerve at the back of the eye. It’s a leather-like tissue‚ that extends around the eye and give the eye its shape. Choroid:The choroid is between the
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Biology II 30 March 2012 The Comparison of Nervous Systems in Humans‚ Cnidarians‚ Flatworms‚ and Annelids The nervous system is one of the most important organ systems in the body. It is in charge of all of the things that happen within the body. Being responsible for receiving sensory input from internal and external stimuli‚ integrating and processing information‚ and generating output‚ it would be hard to survive without a nervous system; however‚ there are different types of nervous systems
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still have influence on simple reflexes. Reflexes can be an indication of nervous system health. When the reflexes are not acting properly or are absent‚ it can tell a physician if there may be a problem with the nervous system or in the region of nerves. Testing reflexes can tell a physician if something is wrong before the patient shows other noticeable signs of nervous system damage. (120 x〖10〗^(-2) m)/0.154s - 0.002s = 7.79m/s
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visual pigments) are the cones since the subject is present in light (colour). The cones detect and then covert the stimulus into an action potential. The eye obtains the physical stimulus in the form of light and then directs it as an electrical impulse to the brain‚ which would interpret the signal as an image. However‚ vision is a much more difficult process as the retina‚ which contains the rods or cones are located at the back of the eye‚ thus the
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from the brain that carries nerve impulses to and from the body along with blood vessels. All vertebrates have spinal and cranial nerves associated with the brain and spinal cord. Also many systems are needed to maintain and control features of the body. For example the endocrine‚ autonomic‚ and peripheral systems are needed for full normal function of the animal. The ability to process information is very important. This involves the brain stem‚ many motor nerve cells‚ basal ganglia‚ and other
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microvilli that project through pores and chemically sense food. Gustatory receptor cells communicate with cranial nerve axon endings to transmit sensation to the brain. There are five taste sensations located on the tongue. They are sweet located front middle‚ sour located middle sides‚ salty located front side/tip‚ bitter located back‚ and umami located posterior pharynx. The cranial nerves that are associated with our taste sense are VII Facial located within the tongue‚ IX Glossopharyngeal located
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is not functioning properly to cause this symptom? The premotor area of Annette’s brain is not functioning properly and thus is producing these symptoms. E. What part of the brain transmits motor impulses from Annette’s basal nuclei to her primary motor area? The thalamus transmits motor impulses from Annette’s basal nuclei to her primary motor area. F. Motor signals from Annette’s primary motor area in her cerebral cortex must travel to the cerebellum so that she can pick up her fork. What
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mark) (b) A – cell body (1 mark) B – axon / nerve fibre (1 mark) C – myelin sheath (1 mark) (c) C is made of fat. (1 mark) It prevents the spread of nerve impulses and helps speed up the rate of transmission of nerve impulses. (1 mark) (d) X is an effector. (1 mark) e.g. muscle / gland (1 mark) (Total: 9 marks) 2. (a) Central nervous system (1 mark) (b) brain (1 mark) (c) spinal cord (1 mark) (d) spinal nerves (1 mark) (Total: 4 marks) B. Fill in the blanks
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Btec Level: 3 in Health and Social Care Unit 5: Anatomy and physiology for Health and Social Care Assessor: F. Mansell Task2: The main tissue types of the body and the role these play in two named organs of the body. P2: Outline the structure of the main tissues of the body There are many different types of cells in the human body. These cells would not be able to function on their own‚ they are all part of a large organism that is called - you. The two named organs that I have chosen for
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