Anatomy of the Nervous System Structure of the Vertebrate Nervous System • Neuroanatomy is the anatomy of the nervous system. • Refers to the study of the various parts of the nervous system and their respective function(s). • The nervous system consists of many substructures‚ each comprised of many neurons. Structure of the Vertebrate Nervous System • Terms used to describe location when referring to the nervous system include: – Ventral: toward the stomach – Dorsal: toward the back –
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Lab IX: Nervous System Histology and Spinal Cord Part II: Neurons and nerve struture 1.) There are three types of neurons. The first is the multipolar‚ which is the most common‚ and they are found as motor neurons and interneurons throughout the central nervous system. The second type of neuron is the unipolar neuron‚ which are also called psuedounipolar neurons. They are found as spinal and cranial sensory neurons. The last neuron is the bipolar neuron. They are only found in olfactory‚ visual
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(Total: 6 marks) 16.2 Nervous coordination A. Questions 1. (a) motor neurone (1 mark) (1 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
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B Structures of the Nervous System This activity will increase your understanding of the different structures of the nervous system and brain. During the Web activity‚ you will view a variety of structures of the brain and nervous system and label each with the appropriate term. You will use this document to write a description for the terms you used in the activity. <Paste your Conclusion screen shot here> As you conduct the Structures of the Nervous System activity‚ follow along
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Homeostasis of BP and Heart Rate A normal blood pressure can be identified by having a systolic pressure of around 120 and a diastolic pressure of around 80. This value is expressed as "120/80". A normal heart rate is expressed as the amount of times it beats in a minute; a normal adult heart rate is between 60-100 beats per minute (BPM). There is a relation between these two measurements‚ but they are stimulated by several different circumstances. The blood pressure is mainly affected
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Disorders of the Nervous System The way we think‚ our emotions‚ and the ability of our body to tell itself to move all connect back to the nervous system. If one part is not connected to another or if something never developed properly it can create a major problem. Disorders can occur within the brain or can be malfunctions of the nerves. Disorders can range from Palsy and Parkinson’s in which symptoms are movements such as tremors to Alzheimer’s which is mental deterioration and loss of memory
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THE NERVOUS AND THE ENDOCRINE SYSTEM. Humans need both the Nervous and the Endocrine systems basically because they do different things in different ways. They both have a co-ordination role and send instructions to other parts of the body. The nervous system does this by way of neurotransmitters‚( chemical messengers)‚ which are able to get messages through at very high speeds‚ and the endocrine system by way of hormones‚( also chemical messengers)‚ which are released from glands and travel
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Nervous System Differences according to: Motor neurons Sensory neurons Autonomic neurons Function Transmits impulses from the CNS which consists of the brain and spinal cord to muscles and glands elsewhere in the body Transmits impulses inwards from the sense organs to the CNS Located within the CNS‚ they transmit the electrical impulses generated by the stimuli to other nerves Structure Have Dendrites‚ Cell Body‚ Myelin Sheath‚ Node of Ranvier and Synaptic Knobs. The cell body is
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Neurotransmitters – Chapter 2‚ Module 2.1-2.2 Fill in the following boxes by and describing the location of the 6 neurotransmitters listed in the first column and discussed in the textbook in Chapter 2. Describe the function of the neurotransmitter and then discuss possible mental health or behavioral or physical issues that can be associated with too much or too little of the neurotransmitter. Save this document and type directly onto the document. The boxes will expand to accommodate what
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is this system called the human nervous system. There are two types of nervous systems: the peripheral and central nervous systems. The peripheral nervous system includes the nerves connecting the central nervous system to the rest of the body. It has two subdivisions: somatic nervous system and autonomic nervous system. Somatic nervous system controls skeletal muscles and interacts with the external environment. An example is walking through a park. You are using your motor nerves‚ which relay messages
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