Physiology Activity 1 1) Explain why the larger waves seen on the oscilloscope represent ventricular contraction. The ventricular contraction is when the blood is sent through the whole body as opposed to the atrial contraction that sends the blood to the heart and lungs. 2) Explain why the amplitude of the wave did not change when you increased the frequency of the stimulation. (Hint: relate your response to the refractory period of the cardiac action potential) How well did the results compare
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1.) Name and describe the function of each part of a neuron. What is a neuron? The neurons are the basic elements of our nervous system. You can call them specialized cells in which includes the units of info-development in our brain‚ are very responsible for the perception and the transportation of information. Each part of the neuron has a very important role providing information in the whole body. The most important parts of a neuron are: a cell body‚ dendrites‚ and an axon. • Cell Body‚ also
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SHEET NAME_____________________ LAB 6: Skeletal Muscle Physiology Electrical Stimulation 1. Complete the following statements by filling in your answers on the appropriate lines below. A motor unit consists of a (a) and all the (b) it innervates. Whole muscle contraction is a(n) (c) response. In order for muscles to work in a practical sense‚ (d) is the method used to produce a slow‚ steady increase in muscle force. When we see the slightest evidence of force
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Sensory Systems Objectives · Describe how sensory receptors communicate to the central nervous system. · Describe receptors that detect temperature‚ pain‚ touch and pressure‚ muscle length and tension‚ and blood pressure. · Describe the nature of vision in terms of its stimulus on the function of rod and cone cells. Introduction The function of the brain is to convey messages to different parts of the body. Messages are conveyed from a nerve cell to another nerve cell‚ muscle cell‚ or
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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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Name________Amanda Fox BIO 23500-60________ BIO 235 Chapter 10 –Nervous System I 1) Define the following word parts. Ax-‚ axle: axon – cylindrical nerve process that carries impulses away from a neuron cell body. Dendr-‚ tree: dendrite – branched nerve process that serves as the receptor surface of a neuron. Funi-‚ cord‚ rope: funilicus – funiculi of spinal cord or bundle of nerve fibers. Gangli-‚ knot: ganglia – deliver information to the body -lemm‚ rind or peel: neurilemma – sheath
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synthesis‚ outflow and major effects of each. The two branches of the Autonomic Nervous System are the sympathetic division and the parasympathetic division. The main process of the sympathetic division is to stimulate the fight-or-flight response in the body‚ which means it is in charge of stimulates actions. In the sympathetic system‚ epinephrine and norepinephrine are the main neurotransmitter. In the sympathetic system‚ there are two neurons involved in transmission and they are the pre-ganglion
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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 cranial nerves
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The nervous system is one of the smallest yet one of the‚ if not the most‚ complex systems in the human body. It can be broken down into two main subdivisions‚ the central nervous system (CNS) and the peripheral nervous system (PNS). The central nervous system contains about 85 billion neurons and includes the spinal cord and brain. It is considered the control center of the body and processes all types of incoming sensory information. The peripheral nervous system is composed of all the other tissue
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The Muscular System: Skeletal Muscle Tissue 1. Fill in the characteristics of the three muscle types: |Muscle Type |Cardiac |Skeletal |Smooth | |Shape of cell |Branching Cell |Elongated Cell |Spindle Shaped Cell | |# of nuclei |Single Central Nucleus |Multiple Peripheral Nuclei |Single Central Nucleus | |Striations |Visible
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