Nervous System: an extensive network of specialized cells that carries information to and from all parts of the body. Neuron: the basic cell that makes up the nervous system and that receives and sends messages within that system. Dendrites: branchlike structures that receive messages from other neurons. Soma: the cell body of the neuron responsible for maintaining the life of the cell. Axon: tubelike structure that carries the neural message. Glial cells grey fatty cells that provide support for
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CENTRAL NERVOUS SYSTEM The Brain -recap * The brain receives signals from inside and outside the body. * It keeps the basic‚ body functions such as heart beat rate‚ breathing rate and temperature control ticking over‚ without us having to think about it. * It also allows us to decide to do things like running and walking and many more complex tasks. It is where our personalities and moods and emotions come from. * The brain of a human being makes up about one-fiftieth of
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1. Explain both the anatomical and functional divisions of the nervous system. Include the subdivisions of each. The nervous system’s function is to monitor stimuli occurring inside and outside the body‚ process and interpret this sensory input‚ and respond by activating effector organs. It consists of the Central Nervous System (brain and spinal cord)‚ and the Peripheral Nervous System (neurons that carry messages to and from the CNS). 2. Describe the composition and function of the cell
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The Eye Item 1 refers to the following diagram of a longitudinal section through the human eye 1. At what point is vision not possible? (A) I (B) II (C) III (D) IV Item 2 refers to the following diagrams (I and II) representing the iris in bright and dim light respectively. 2. What causes the appearance in I and II to be different? (A) In bright and dim light the circular and radial muscles both contract. (B) In bright and dim light both circular and radial muscles relax. (C)
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Nervous System Practice Quiz Which ancestral region of the brain is responsible for modern human’s speech and ability to do algebra? -Forebrain It is your turn to do your presentation. You have worried about this moment all month long. Are you prepared? Will someone spot that ring of sweat forming under your arms? Because of the activity of your __________ nervous system‚ ____________. -Sympathetic….epinephrine shoots through your body and your lunch suddenly does not agree with you The corpus
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Organization of the human body Human anatomy and physiology – study of the structure and function of the human body. Anatomy- the scientific discipline that investigates the structure of the human body. Physiology – The scientific discipline that investigates the process of functions of living things. 6 Structural levels 1. Chemical level – atoms combine to form molecules 2. Cell level – Molecule form organelles 3. Tissue level – similar and surrounding material make up tissues
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* Difference in Somatic and Autonomic Nervous System * The somatic nervous system consists of nerves that provide VOLUNTARY control over skeletal muscles * The autonomic nervous system exerts INVOLUNTARY control over the contraction of smooth muscle‚ cardiac muscle‚ and glandular activity. * Basic function of the Sympathetic VS Parasympathetic Systems * Sympathetic system= “fight of flight” * Parasympathetic system= “rest and digest” * Both autonomic branches are required
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The skeletal system: The bones of the skeletal system hold the body together‚ give it shape and support weight. They also enable the body to move and provide protection to the vital organs. There are four types of bones found in the human body: they are long bones which can be found in the arms‚ legs‚ fingers and toes‚ short bones which are found in the wrist and ankles‚ flat bones such as those in the skull‚ thorax and pelvis‚ irregular bones such as the bones of the vertebral column and face
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maintain a constant condition in a biological system by means of automatic mechanisms that work against influences leaning towards disequilibrium. This action primarily aims to preserve relative constancy in the body when severe changes occur in the external environment‚ as it very important for the body to maintain homeostasis in order to survive. If conditions happen to drift too far‚ certain biochemical reactions are ignited
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NERVOUS SYSTEM STUDY GUIDE 1. 3 FUNCTIONS OF NERVOUS SYSTEM 2. 2 MAJOR NERVOUS SYSTEMS 3. AFFERENT VS. EFFERENT NERVES. What does each do? 4. SOMATIC VS AUTONOMIC NERVOUS SYSTEM What does each do? Which is involuntary? 5. SYMPATHETIC VS PARASYMPATHETIC What are some things that happen when you get scared? When you have just had a big meal? 6. Draw the Graphic Organizer for the nervous system 7. ANATOMY
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