central nervous system. It can be either a voluntary activity from the brain or a reflex activity from the spinal cord. An action potential passes outward in a ventral root of the spinal cord as a motor neuron in the ventral horn is stimulated. The axon branch to supply numerous muscle fibers or motor units and the action potential is carried to a motor end plate on each muscle fiber. Then the action potential releases quanta of acetylcholine into the synaptic clefts on the surface of the muscle fiber
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tools which are responsible for most of the brain’s function. It is divided into four sections: the temporal lobe‚ the occipital lobe‚ parietal lobe and frontal lobe. The cerebrum is divided into a right and left hemisphere which are connected by axons that relay messages from one to the other. This matter is made of nerve cells which carry signals between the organ and the nerve cells which run through the body. Frontal Lobe: The frontal lobe is one of four lobes in the cerebral hemisphere. This
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Cranial Nerves The human body is a unique and fascinating entity. There is not much notice taken of the features the human body is capable of. The brain is necessary to perform day-to-day actions‚ such as the ability to speak‚ and see amongst us. This brain is made up of simple mater (Pia mater‚ Arachnoid mater‚ Dura mater) and the cranial surface to protect the brain. We live our daily lives without acknowledging the importance of this organ‚ the brain‚ unless you’re a medical student of
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Foundations of Psychology PSY300 September 4‚ 2011 Foundations of Psychology It is just another normal day for you. You were taking a leisurely stroll through the park before you decided to rest for a minute on a bench. And that is when you notice the man sitting next to you‚ singing quietly to himself. He seemed normal at first glance‚ but you begin to notice that he looks disheveled. Hair a little frazzled‚ and clothing a bit wrinkled. At first it seems no big deal. Then you
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Mark scheme June 2002 GCE Biology B Unit BYB4 Copyright © 2002 AQA and its licensors. All rights reserved. The Assessment and Qualifications Alliance (AQA) is a company limited by guarantee registered in England and Wales 3644723 and a registered charity number 1073334 Registered address: Addleshaw Booth & Co.‚ Sovereign House‚ PO Box 8‚ Sovereign Street‚ Leeds LS1 1HQ Kathleen Tattersall: Director General klm SECTION A Question 1 (a) GCE: Biology B – BYB4 June 2002 X = grana/lamellae/thylakoid
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ovum is growing in ovary b. diminished secretion from granulosa lutein cells c. diminished LH stim. of estrogen from granulosa lutein cells 22. know how to ID a myelinated vs unmyelinated axon 23. merkel cells are mechanoreceptors Pacinian for vibrations 24. which cells of the organ of corti connect to axons? Inner hair cells 25.
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P2 Outline the structure of the main tissues of the bodyTYPES OF TISSUES: Epithelial Connective Muscle Nervous -112395159385 Epithelial Tissue Epithelial tissue covers other tissues. Epithelial tissues are very thin layers of cells used to cover organs and other surfaces. May be found covering blood vessels‚ individual organs and other small organs. There are 4 types of epithelia tissue. Pavement or Squamous Epithelium 54667158826500Squamous epithelium is the scientific name for a type
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taste buds (mushroom like projections) which are specific receptors for sense of taste. Each bud contains several cell types in microvilli that project through pores and chemically sense food. Gustatory receptor cells communicate with cranial nerve axon endings to transmit sensation to the brain. There are five taste sensations located on the tongue. They are sweet located front middle‚ sour located middle sides‚ salty located front side/tip‚ bitter located back‚ and umami located posterior pharynx
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Alvaro Comino LAB REPORT 4 CONNECTIVE TISSUE (SPECIALIZED) I. Abstract In this experiment‚ identification and classification of different types of connective tissue was performed. Also‚ cells and extracellular matrix was to be identified in them. For this‚ different already prepared slides were chosen and observed under the microscope to then identify the different parts. II. Introduction Apart from the bone and cartilage‚ the rest of the specialized connective tissues are divided
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structures. These are soma‚ the cell body which shields and protect the nucleus. Dendrite is the branch like mechanism that the neurons obtain information. Axon the long thin tube structure that take the information sent from the soma to the terminal buttons and the terminal buttons are small knob structure at the end of each branch of the axon. These buttons discharge neurotransmitters. The forebrain is made up of the telencephalon and the diencephalon. The midbrain comprises of mesencephalon which
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