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Transcript of Brain Understanding
The Four Lobes
1. Frontal-decision making
2. Temporal- understand sound, speech, and music
3. Parietal- sensory and language
4. Occipital-interpreting sight and reading comprehension
Conscious- what you think about
Subconscious- you don't know you thinking about it
Sensory-Somatic System consists of 12 pairs of cranial and 31 pairs of spinal nerves.
Peripheral Nervous System
Contains the nerves that connect the CNS to the organs, skin, and limbs.
Sensory Neurons- runs from the stimulus receptors to the CNS
Motor Neurons- (effectors) runs from the CNS to the muscles and glands
Hemispheres of the Brain
The receptors for taste, called taste buds, are situated chiefly in the tongue, but they are also located in the roof of the mouth and near the pharynx. They are able to detect four basic tastes: salty, sweet, bitter, and sour.
The ear is the organ of hearing.The outer ear protrudes away from the head and is shaped like a cup to direct sounds toward the tympanic membrane.he inner ear, or cochlea, is a spiral-shaped chamber covered internally by nerve fibers that react to the vibrations and transmit impulses to the brain via the auditory nerve. The brain combines the input of our two ears to determine the direction and distance of sounds.
The eye is the organ of vision.The eye is connected to the brain through the optic nerve. The point of this connection is called the "blind spot" because it is insensitive to light. Experiments have shown that the back of the brain maps the visual input from the eyes.
The nose is the organ responsible for the sense of smell.The smells themselves consist of vapors of various substances. The smell receptors interact with the molecules of these vapors and transmit the sensations to the brain.
The sense of touch is distributed throughout the body. Nerve endings in the skin and other parts of the body transmit sensations to the brain. Some parts of the body have a larger number of nerve endings and, therefore, are more sensitive. Four kinds of touch sensations can be identified: cold, heat, contact, and pain.