Components * There are three parts to the muscular system: * the muscles themselves‚ * nerve tissues and connective tissues. * The connective tissues (tendons) attach the muscles to the skeletal system. * The nerve tissues conduct the electrical impulses that control the muscles. Muscle characteristic * irritability‚: denotes how a muscle responds when it receives an electrical impulse or is damaged * contractibility‚: is how muscles move; they shorten‚ then relax to control
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II only (D) II and III only 4. Which of the following types of lens will correct short sightedness? (A) (B) (C) (D) 5. Which of the following parts of the eye functions as a receptor? (A) Iris (B) Lens (C) Retina (D) Optic nerve 6. The eye is sometimes referred to as an effector organ because (A) the pupil constricts in the presence of bright light (B) the rods and cones are stimulated by light (C) images which fall on the retina are sent to the brain (D) neurons from
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The biggest controversy of the deaf community has been the topic of a cochlear implant. The debate is centered around the expense‚ risk and idea of the implants causing deaf people to distance themselves from the deaf community rather than emerging themselves. This is due to the cochlear implants ability to provide a sense of sound to the deaf individual. It is only used when a hearing aid is not strong enough to provide adequate function. The cochlear implant involves a lot of time to consider the
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<br><br>When someone looks at an object‚ what he/she is really seeing is the light that the object reflects‚ or gives off. This reflected light passes through the lens and falls on to the retina of the eye. Here‚ the light induces nerve impulses that travel through the optic nerve to the brain‚ where it makes an image of the object‚ and then that image is passed on to muscles and glands.<br><br>The eye is well protected. It lies within a bony socket of the skull. The eyelids guard it in front. They blink
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SENSE ORGANS RECEPTORS (Sense organs) * Transducers of specific forms of kinetic energy * Change mechanical‚ electrical‚ thermal‚ chemical‚ or radiant energy into nerve impulses in sensory neurons Two major categories: * GENERAL RECEPTORS * Often exist as individual cells or receptor units * Widely distributed throughout the body * Most numerous such as: * touch‚ temperature‚ and pain: and * to initiate various reflexes necessary for maintaining
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pairs of nerves branch from the CNS. 12 of the pairs branch from the brain and the other 31 nerve pairs branch from the spinal cord. The 43 pairs of nerves stretch throughout the body to form the peripheral nervous system. The CNS is the coordinator and “decision maker” in the nervous system‚ and the PNS is sending the information as sensory input and receives instructions as motor output to muscles and glands. The autonomic nervous system has some elements in the CNS and it shares some nerves with
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scents at the point of sale to create a more enjoyable atmosphere which increases the buy-impulse. 2. Function and anatomy of the brain‚ logic of emotions‚ principles 2.1. Function and anatomy The human brain regulates and steers our bodies. All processes happening to make work certain parts of the body‚ have a biochemical or biophysical basis1. For instance: if signals wouldn´t be send through nerves to the heart to make it pump blood through the veins‚ it would simply stop beating. The central
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Anesthesiologist- is a physician who specializes in anesthesiology. Auditory/Eustachian tube - is a tube that links the nasopharynx to the middle ear. Auricle-is the outer projecting portion of the ear. Also called pinna. ANS- Is the system of nerves that regulates body functions which have no direct voluntary control. Cerebrum- is the anterior and largest part of the brain‚ consisting of two halves or hemispheres and serving to control voluntary movements and coordinate mental actions. Ciliary
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information from the environment so that people can function in the world. Each nerve cell in the brain communicates with some 10‚000 other nerve cells. 3. Adaptation As the world constantly changes‚ the brain and nervous system allow a person to adjust to those changes. The brain has a lot of plasticity‚ meaning it has a vast capacity for modification and change. 4. Electrochemical Transmission Electrical impulses and chemical messenger systems allow the brain and nervous system to work as an
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brain is a spongy organ made up of nerve and supportive tissues. It is located in the head and is protected by a bony covering called the skull. The base‚ or lower part‚ of the brain is connected to the spinal cord. Together‚ the brain and spinal cord are known as the central nervous system (CNS). The spinal cord contains nerves that send information to and from the brain. The CNS works with the peripheral nervous system (PNS). The PNS is made up of nerves that branch out from the spinal cord
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