BPK 105 Study Guide - Midterm Guide: Central Nervous System, Somatic Nervous System, Autonomic Nervous System
27 Apr 2018
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Module 4 - Review Questions - Part 1
1. Describe each of the general functions of the nervous system. [5 marks]
1. Receiving sensory input
-sensory receptors monitor numerous external and internal stimuli
-aware of some (vision, hearing, taste, smell, touch, pain, body position, temperature)
-not aware of others (blood pH, blood gases, blood pressure)
2. Integrating information
-brain and spinal cord are major organs for processing sensory input and initiating responses
-input may produce an intermediate response, be stored as memory or be ignored
3. Controlling Muscles and Glands
-skeletal muscles normally contract only when stimulated by nervous system
-control muscles = nervous system controls major body movement
-control cardiac muscle, smooth muscle, and many glands
4. Maintaining Homeostasis
- depends on nervous system's ability to detect interpret, and respond to changes in internal and
external conditions
-can stimulate or inhibit the activities of other systems to help maintain a constant internal
environment
5. Establishing and Maintaining Mental Activity
-brain is center of mental activity
-consciousness, memory and thinking
2. Briefly describe all the divisions and subdivisions of the Nervous System. [9
marks]
The sensory division of the peripheral nervous system (PNS) detects stimuli and conducts
action potentials to the central nervous system (CNS). The CNS interprets incoming action
potentials and initiates action potentials that are conducted through the motor division (purple)
to produce a response. The motor division is divided into the somatic nervous system and the
autonomic nervous system.
Cns (central nervous system)- consists of brain and spinal cord
- brain is housed within the braincase; the spinal cord is in vertebral column.
Pns (peripheral nervous system)- consists of all the nerves and ganglia outside CNS [divided
into sensory + motor]
- collects info from inside and on the surface of the body and relays it by way of sensory
neurons to the CNS, where one of three results is possible: The information is ignored,
triggers a reflex, or is evaluated more extensively
- PNS links CNS with the various parts of the body.
- carries info about the different tissues of the body to the CNS
Document Summary
Module 4 - review questions - part 1: describe each of the general functions of the nervous system. Sensory receptors monitor numerous external and internal stimuli. Aware of some (vision, hearing, taste, smell, touch, pain, body position, temperature) Not aware of others (blood ph, blood gases, blood pressure: integrating information. Brain and spinal cord are major organs for processing sensory input and initiating responses. Input may produce an intermediate response, be stored as memory or be ignored: controlling muscles and glands. Skeletal muscles normally contract only when stimulated by nervous system. Control muscles = nervous system controls major body movement. Control cardiac muscle, smooth muscle, and many glands: maintaining homeostasis. Depends on nervous system"s ability to detect interpret, and respond to changes in internal and external conditions. Can stimulate or inhibit the activities of other systems to help maintain a constant internal environment: establishing and maintaining mental activity.
