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10 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Describe the function of the nervous system No.1 |
The nervous system analyses sensory information from the body and the external environment, it stores some aspects and makes decisions regarding appropriate responses and behaviours |
Nervous system Sensory input Storage Decisions Responses
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Describe the function of the nervous system. No.2 |
The nervous system makes the motor responses by initiating muscular contractions or glandular secretions. |
Contractions Secretions |
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Outline the structure of the human nervous system. No.1 |
The central nervous system (CNS) consists of the brain and spinal cord. |
Central nervous system (CNS) Brain Spinal cord |
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Outline the structure of the human nervous system. No.2 |
The brain processes information and the spinal cord connects the brain to the Peripheral nervous system (PNS). |
Peripheral nervous system (PNS) |
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Outline the structure of the human nervous system. No.3 |
The PNS is a collection of nerves carrying information to and from all parts of the body. It consists of the Somatic nervous system (SNS) and Automatic (ANS). |
Somatic nervous system (SNS) Automatic nervous system (ANS) |
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State the role of the Somatic nervous system (SNS) |
Sensory and motor neurons of the somatic nervous system (SNS) control the voluntary movements of skeletal muscles. |
Sensory Motor (SNS) Voluntary movements Skeletal |
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State the role of the Autonomic nervous system (ANS) |
Homeostatic control through the sensory neurons and motor neurons conducting involuntary impulses to smooth muscle, cardiac muscle and glands. |
Homeostatic control Involuntary Smooth Cardiac |
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Describe how the ANS maintains a steady internal state |
The ANS consists of two antagonistic groups of nerve fibres- the Sympathetic nerve fibres and Parasympathetic nerve fibres. Antagonistic- they exert an opposing influence which keeps systems balanced |
Antagonistic Sympathetic Parasympathetic Balance |
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Describe the action of the Symthepathetic nerve fibres |
Increase heart rate; Increase rate and depth of breathing; decrease the rate of peristalsis in the gut and the secretion of digestive juices. (Fight or Flight responses) |
Increase Rate Depth Peristalsis Secretion |
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Describe the action of the Parasympathetic nerve fibres |
Decrease heart rate; Decrease rate and depth of breathing; increase the rate of peristalsis in the gut and the secretions of digestive juices. (Rest & Digest responses) |
Decrease Rate Depth Peristalsis Secretions |
