thought‚ reason‚ emotion‚ and memory. III. Nervous System: 1. The nervous system of the human being is responsible for sending‚ receiving‚ and processing nerve impulses throughout the body. All the organs and muscles inside your body rely upon these nerve impulses to function. 2. The nervous system consists of two major divisions of nerves‚ 1. Central nervous system- which controls; the functions of the brain and spinal cord. 2. Peripheral nervous system- which controls all other neural elements
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to fire when a stimulus is required‚ the medulla magnify efforts of the body organ when at rest or in times of danger and frightening‚ the sympathetic and parasympathetic nervous system for the involuntary system to regulate and control nervous impulse from the cerebral trunk and the bone marrow. However the body has an internal regulatory system to ensure smooth and safe movements too‚ so that neither two muscles contract at the same time which may indulge injury or strain. Three internal regulatory
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also featured in th phospholipid bilayers where they play a big part in diffusion etc. They are used as carrier to water soluble molecules‚ pumps wherby ATP is used to move water soluble molecules. Receptors are also proteins-these enable hormone and nerve transmittors to bind to specific cells‚ to the recognition sites as in enzymes. Glycoproteins act as receptors and recognition sites. Carrier proteins bind to a specific molecule‚ this inturn changes shape to get through the membrane surface to the
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histology. 2. Name and briefly describe the four basic types of tissue. 3. Name the three subtypes of simple epithelial tissue. 4. List the five main subtypes of connective tissue. 5. Name the three subtypes of muscle tissue. 6. Name the two types of nerve tissue. 68 Section 6 Types of Tissue HISTOLOGY Histology is the microscopic study of cells‚ tissues‚ and organs. Also called microscope anatomy‚ histology has two basic classes: 1) normal histology— the study of normal tissues‚ and 2) pathologic
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neural impulses from other neurons and convey impulses toward the cell body 2. Axon: long tube like structure that conveys impulses away from the neurons cell body toward other neurons/muscles or glands 3. Cell Body: part of the neuron containing the cell nucleus as well as other structures that help the neuron carry out its functions; also known as the soma 4. Myelin Sheath:layer of fatty insulation wrapped around the axon of some neurons‚ which increases the rate at which nerve impulses
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environment or within that bring about the reaction eg: touching a hot plate. Response : The reaction of our body to these changes. eg. withdrawal of our hand How do we detect that we are touching a hot object? Receptors : Are specialised tips of some nerve cells that detect the information from the environment. Receptors are Sense Organs Inner Ear Photo receptors Eyes Skin Olfactory Receptor (Nose) Gustatory Receptor (Tongue) Hearing/ Balance of the body Visual Stimulus
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Cells are the structural and functional units of all living organisms; each specialised to perform dedicated duties throughout their life span. All living organisms can be sorted into one of two groups depending on the fundamental structure of their cells. These two groups are the prokaryotes and the eukaryotes. A Prokaryote cell is the first form of cells for many millions of years until the eukaryote cell evolved from the prokaryote cell‚ which created life. Prokaryote cells are organisms made
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happened in the muscle when the maximal stimulus is achieved?: All the individual nerve fibers have been stimulated & responding all-or-none. What is the effect of curare on eliciting an AP?: Curare affects the synapse rather than nerve propagation. b/c curare works by blocking synaptic transmissions so that neural impulses do not travel from neuron to neuron. What is the effect of ether on eliciting an AP?: no nerve response What is the effect of lidocaine on eliciting an AP?: Blocks sodium ion
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Muscles are responsible for all conscious and unconscious movement. It is how we move and react to an environment. There are three types of muscles in the body include the skeletal muscle‚ smooth muscle‚ and the cardiac muscle. Whether you are running‚ walking‚ breathing‚ eating‚ sleeping‚ or typing it all involves some sort of muscle action. Muscle cells that shape‚ form‚ and outline the whole human skeleton is called a muscle fibers. There are two types of muscle fibers: Type I (slow-twitching
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emotional impact this illness. One out of every two families in the United States has a loved one who suffers with AD. Alzheimer’s disease begins an average age of 30 years before the first symptoms. The accumulation of beta amyloid plaques in between nerve cells; Amyloid are protein fragments that our body produce normally and Beta amyloid are protein fragment
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