to as an effector organ because (A) the pupil constricts in the presence of bright light (B) the rods and cones are stimulated by light (C) images which fall on the retina are sent to the brain (D) neurons from the eye lead to the central nervous system Item 7 refers to the following diagram of the eye. 7. Which of the labeled parts contains cells called rods and cones? (A) I (B) II (C) III (D) IV 8. Andrea leaves a brightly lit area and ventures into a dark closet. Which of the
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The nervous system is one of the most important systems in the body. The nervous system helps to keep the human body in balance. There are several important parts of the nervous system; the brain‚ spinal cord‚ and nerves. Each part of the nervous system has different jobs. There are two main parts of the nervous system peripheral and central. The peripheral nervous system is a collection of peripheral nerves‚ ganglia and specialized sensory structures that‚ as a unit‚ carries sensory and motor information
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1. Differentiate between the somatic nervous system and the ANS. Somatic nervous system includes all of the neural pathways (neurons) that result in voluntary actions‚ basically anything that you can tell your brain to do like move your arm or stick out your tongue. The autonomic nervous system includes all of the neural pathways that result in involuntary actions‚ like your brain telling your eyes to blink or your intestines to contract‚ basically anything that you cannot control. 2. Describe
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Psychology The Nervous System The nervous system is divided into two main areas‚ the peripheral nervous system and the central nervous system. The central nervous system controls the brain and spinal cord. The average human brain weighs approximately 3 pounds and contains approximately 100 billion neurons‚ as well as trillions of “support cells” called glia. The spinal cord weights approximately 35-40 grams and is around 43 cm long in adult woman and 45 cm long in adult men. The frontal
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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 central nervous system (CNS) is that portion of the vertebrae nervous system that is composed of the brain and spinal cord. Together with the peripheral nervous system (PNS)‚ the other major portion of the nervous system‚ the CNS coordinates the body’s interaction with the environment. The CNS is contained within the dorsal cavity‚ with the brain in the cranial subcavity (the skull)‚ and the spinal cord in the spinal cavity (within the vertebral column). Then human nervous system is the most
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Emily Muñoz 1/7 period Nervous System The nervous system consist of all the nerves the body has. Controlling not only the actions the body takes but the emotions a human being feels. The spinal cord‚ brain‚ and many nerves revolve around the nervous system. There are three overlapping functions that use millions of sensory receptors‚ that monitor the body. By monitoring the body the functions detect any changes the human body has had.Two components separate the nervous system allowing us to focus
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Chapter 16 The Autonomic Nervous System Sympathetic (Thoraco-lumbar) division Parasympathetic (Cranial-sacral) division Somatic Motor vs Visceral Motor ■ ■ ■ ■ Somatic motor is directed from cortical levels to skeletal muscles and is voluntary. Visceral motor is directed from hypothalamus and midbrain and is involuntary‚ but has input from cortex and thalamus. Somatic lower motor neuron is in ventral horn of gray matter and neurotransmitter at skeletal muscle is Ach. Visceral motor comes from
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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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14: The Autonomic Nervous System Objectives Introduction 1. Define autonomic nervous system and explain its relationship to the peripheral nervous system. 2. Compare the somatic and autonomic nervous systems relative to effectors‚ efferent pathways‚ and neurotransmitters released. 3. Compare and contrast the functions of the parasympathetic and sympathetic divisions. ANS Anatomy 4. For the parasympathetic and sympathetic divisions‚ describe the site of CNS origin‚ locations of ganglia
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