Cranial nerve anatomy by greg mclauchlin i olfactory nerve the olfactory nerve is unique, but not in ways that make it particularly interesting. If all you can see is a blur try turning the focussing wheel. The first two olfactory and optic arise from the cerebrum, whereas the remaining ten emerge from the brain stem. Cranial nerves quizzes and labeling exercises kenhub. Cranial nerve worksheet match the correct cranial nerve to its function, then tell me if it is a sensory nerve, motor nerve, or both. A structured summary of the cranial nerves, providing key points regarding each cranial nerve s course, function and clinical relevance. Laboratory exercise 7 cranial nerves and brain structure. Intended to be used with a more indepth knowledge or reference source for these cranial nerves. The sensory neurons in the olfactory epithelium are outside the meninges and below the cribriform plate. Cranial nerves are the nerves that emerge directly from the brain including the brainstem. The main sensory and motor nuclei of the cranial nerves are shown in fig. The superior division innervates, sensibly, the superior rectus and levator. Nov 15, 2016 learn the cranial nerves with this coloring worksheet. Cns is composed of the brain located in the cranial cavity and the spinal cord located in the vertebral cavity, which serve as the main control centers for all body activities.
Which cranial nerves are sensory, motor or mixed in function. Cranial nerve 5 motor and sensory nervetrigeminal nervecarries sensory information from. Follow the superior and inferior temporal and nasal arteries and veins out from the disc and examine the four quadrants of the fundus. Characteristics of the cranial nerves, which are numbered from anterior to posterior as they attach to the brain, are summarized in table 1. What can you glean from each cn simply by its name. Cnii is attached to the central cerebrum via the optic chiasma hypothalamus, cniii and iv to the midbrain. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Learn the cranial nerves with this coloring worksheet. There are 12 pairs of cranial nerves, all of which pass through foramina of the skull. Covers structural relationships of cranial nerves for the 2012 systemic human anatomy class at mcgill university. If its helpful for you, you can also download the labeled cranial nerves diagram and use it to make notes. Knowing the anatomy and functions of the cranial nerves is handy for diagnosing lesions and predicting their effects.
Weakness of downward gaze can cause difficulty in descending stairs. The names of the cranial nerves relate to their function and they are also numerically identified in roman numerals ixii. There are some differences in the assessment of cranial nerves with different species, but the general principles are the same. The two optic nerves come together at the optic chiasm located just under the hypothalamus a crucial part of vision and perception must happen crossover of information from the right eye crosses over to the left side and visa versa happens here at the optic chiasm information from each eye must be processed in both halves of the brain.
Spinal nerves branches of the spinal nerves details rami communicantes white and gray ramus innervates smooth muscles, glands, and organs motor impulses leave the spinal cord through the ventral root to the spinal nerves dorsal ramus innervates skeletal muscles of the neck and back ventral ramus. Cn i and ii are extensions of the brain rather than true peripheral nerves and are therefore not associated with nuclei in the brainstem. During medical studies, cranial nerves are an essential element of the subjects of the brain and the nervous system. They synapse in the bulb itself, and those secondary neurons project.
Mar 26, 2017 learn the 12 cranial nerves with this simple mnemonic and coloring worksheet, appropriate for high school anatomy students. Come up with a mnemonic to remember the names of the cranial nerves 2. A brief,easy to use, picturequestion based pocket reference of cranial nerves v, vii, ix, x, xi, and xii to use during bedside swallow evaluations. Clinical examination a comprehensive collection of clinical examination osce guides that include stepbystep images of key steps, video demonstrations and pdf mark schemes. Some cranial nerves are sensory nerves containing only sensory fibers, some are motor nerves containing only motor fibers, and some are mixed nerves containing a combination of sensory and motor nerves. Cranial nerves cranial nerve evaluation is an important part of a neurologic exam. Come up with a mnemonic to remember the names of the cranial nerves. Factors responsible for the complex internal organization of the brain. Lesions to nucleus solitarius disrupt taste sensation. Use the data sheet to record the results of your test. Cranial nerve lab in this lab you will create experiments to test each of the 12 cranial nerves. Each row contains at least 1 cell with enough information to fill in all blanks. Which cranial nerves are sensory, motor or mixed in function 3. About this worksheet this is a free printable worksheet in pdf format and holds a printable version of the quiz michelles cranial nerves game.
The first two nerves olfactory and optic arise from the cerebrum, whereas the remaining ten emerge from the brain stem. The 12 cranial nerves detail cranial nerve 1 sensory nerve olfactory nerve controls sense of smell cranial nerve 2 sensory nerve optic nerve controls vision by sending information from retina cranial nerve 3 motor nerve oculomotor nervecontrols most eye muscles. Cranial nerve lab murrieta valley unified school district. The inferior division innervates the inferior rectus, inferior oblique, medial rectus, and the pupil. Each cranial nerve is paired and is present on both sides of the brain hemisphere. Some cranial nerves are sensory nerves containing only sensory fibers, some are motor nerves containing only motor fibers, and some are mixed nerves containing a. Cranial nerve examination prepare patient introduction position sitting general inspection general signs. Learn the 12 cranial nerves with this simple mnemonic and coloring worksheet, appropriate for high school anatomy students. The optic disc is seen as the place where all the vessels converge. This is a free printable worksheet in pdf format and holds a printable version of the quiz cranial nerves. They supply motor fibres and bring sensory fibres from head and neck except for few exceptions. The names of the cranial nerves relate to their function and are numerically identified in roman numerals ixii. Created by mack michellrobinson in 2012 for mcgill university, dept.
Information youll be assessed on includes naming various cranial nerves as. The second page has a brief comparison section between spinal and. Displaying all worksheets related to cianial nerves. Motor nerve oculomotor nervecontrols most eye muscles. Pns is composed of nerves derived from the brain and spinal cord 12 pairs of cranial nerves and 31 pairs of spinal. Download pdf worksheet blank download pdf worksheet labeled. They arise from their nuclei in the brain cortex and brain stem. Functional anatomy article pdf available in annals of the royal college of surgeons of england 892 march 2007 with 2,445 reads how we measure reads. There the nerve splits into a superior and an inferior twig. You can check your understanding of which nerves work facial expressions, taste sensations and tongue movement using this quiz and worksheet. Remembering the order and function of the cranial nerves. Scars facial asymmetry neurofibromas skin lesions e. Rcc n22 cn worksheet testing cranial nerves activity sheet we will do this in class but please print 12 cranial nerves and assessment scribd 12 cranial nerves and assessment.
The cranial nerves the twelve pairs of cranial nerves are continuous with the brain and are numbered from anterior to posterior, according to their attachments to the brain. Match the letters on the diagram of the human brain right lateral view to the appropriate terms listed at the left. Somatosensory information touch, pain from the face and head. The cranial nerves are a set of 12 paired nerves that arise directly from the brain. Mechanoreceptors pressure receptors, stretch receptors, and specialized mechanoreceptors.
The olfactory nerve is associated with olfactory sva sensation smell. How to learn the 12 cranial nerves the biology corner. Cranial nerve 4 motor nerve trochlear nerve controls the downward and outward movement of the eye. Cranial nerves worksheet list the 12 cranial nerves and state whether it. Controls eye movement, pupil dilation, and pupillary. Use this quiz worksheet combo to help you test your understanding of cranial nerves cn. Sturgeweber i olfactory nerve ask patient if any problem with sense of smell use standard set of bottles of nonpungent odours. Cranial nerves worksheet list the 12 cranial nerves and state whether it is a motor, sensory or. The twelve cranial nerves, in order from i to xii are. Testing cranial nerves activity sheet most popular.
Moreover, part of the spinal accessory nerve arises from the cervical spinal cord. Cranial nerves and brain components objectives after completing this laboratory, the student will be able to. Sensation over angle of mandible is supplied by c2 not trigeminal nerve. Answer the following questions using your memory, the syllabus, your textbook and whatever other reference you want. Assessment of cranial nerves ixii below you will find descriptions of how to perform a neurological exam for cranial nerves. Cranial nerves assessment can be tedious and sometimes we forget how to do assess a nerve. This is a great way to start to get the cogs turning and warm up your memory before you take our other cranial nerve quizzes but one thing at a time more on those next. Read the following descriptions of actual clinical tests and then design 12 experiments to test your lab partners 12 cranial nerves. Sensory for smell always begin by asking patient if heshe has had any decrease in ability to smell. All the nerves are distributed in the head and neck except the tenth, which also supplies structures in the thorax and abdomen. By printig out this quiz and taking it with pen and paper creates for a good variation to only playing it online.
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