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Anatomy test 2 pt 2
cortexes and nerves in CNS
| Question | Answer |
|---|---|
| What is the function of the premotor cortex? | deals with fine movements like typing |
| what is the function of the primary motor cortex? | motor control of parts of the body |
| What is the function of brocas area | allows us to talk and form words |
| what is the function of the prefrontal cortex | complex thought and personality |
| what is the function of the primary somatosensory cortex? | involved in processing signals from senses after thalamus |
| what type of nerves are in the frontal rootlets? | efferent nerves |
| what type of nerves are in the dorsal rootlets? | afferent neurons |
| what is the path of the sensory afferent neuron? | body part - spinal nerve-dorsal rootlets- gray matter in spinal cord-thalamus |
| what is the path of the somatic motor neuron? | brain-gray matter- frontal rootlets- body |
| What is the role of the olfactory nerve? | sensory function of smell |
| what is special with the pathway of the optic nerve? | Most sensory information crosses over at optic chiasm from left eye to right brain and vice versa, but not all of it |
| What does the oculomotor nerve do? how many muscles does it control? What autonomic functions does it have? | it moves the eye and controls 4 of 6 muscles. it has the functions of dilating the pupil and iris |
| What is the function of the trochlear nerve? | control the ye muscle called the superior orbital fissure |
| if the trochlear nerve is not working, what position is the eye? | inward and up |
| if the oculomotor nerve is not working, what position is the eye? | laterally and down |
| what is the difference between the optic nerve and oculomotor? | the optic nerve controls sensory information regarding vision whereas the oculomotor nerve is motor and moves the eye, as well as dilating pupil and iris |
| What is the function of the trigeminal nerve? | allows you to feel your face including touch, taste and temp and allows you to CHEW |
| what is the job of the ophthalmic branch? Where does it branch to? | sensation in forehead, eyeball and side of nose that passes through inferior orbital fissure |
| what is the job of the maxillary branch? Where does it pass through? | it passes through the formen rotundum and innervates upper teeth and mucosa |
| what is the job of the mandibular branch? Where does it pass through? | innervates the tongue, chin and chewing muscles as well as teeth, passes through the foramen ovale |
| what is the role of the abducens? | controls the lateral rectus eye muscle |
| what is the role of the facial nerve? | move face to form expression and controls taste on tip of tongue. also responsible for saliva production and tears |
| what is the role of the vestibulocochlear nerve? | sensory function that allows balancing and hearing |
| what is the function of the glossopharangeal nerve? | main function is swallowing and saliva production. taste on back of tongue and measure of CO2 levels |
| what is the function of the vagus nerve? | motor commands associated with parasympathetic |
| what is the function of the accessory nerve? | allows movement of major neck muscles |
| what is the function of the hypoglossal nerve? | allows movement of tongue for speaking and manipulating food |
| what is the mnemonic for remembering the nerves? | often our old trusty truck acts funny, very good vehicle any how |
| What do the pre and post ganglionic neurons in the somatic nervous system release? | ACH |
| What do the pre and post ganglionic neurons in the autonomic nervous system release? | ACH |
| what areas of the body are only innervated by the sympathetic nervous system? | sweat glands, blood vessels and adrenal medulla |
| what is the characteristic of the preganglionic cell? | it always has light myelination |
| What do the pre and post ganglionic neurons in the parasympathetic nervous system release? | ACH |
| What do the pre and post ganglionic neurons in the sympathetic nervous system release? | pre: ACH post: norepinephrine |
| where are you likely to find sympathetic preganglions? | the spinal cord |
| what is a cholinergic fiber? | any fiber that releases acetylcholine |
| What is a cholinergic receptor? | any receptor that recieves acetylcholine |
| what are the two categories of cholinergic receptors? | nicotinic or muscarine receptors |
| what is the function of nicotinic receptors? where are they found? | receive ACH and stimulate tissue. found in skeletal muscle, adrenal medulla, and cell bodies of post ganglionic neurons |
| what is the function of muscarinic receptors? where are they likely to be found and what system? | stimulation of parasympathetic target organs like stomach, salivary glands and liver |
| adrenergic fibers function? | release norepinephrine |
| what are the types of adrenergic receptors? | beta 1 receptors, beta 2 receptors, beta 3 receptors and alpha 1 receptors |
| beta 1 receptors are... | found in kidney and heart and stimulate both |
| beta 2 receptors...what do they do to bronchioles? | are mostly inhibitory and relax smooth muscle in digestive system and bladder. relaxes walls of bronchioles and feed into skeletal muscle, heart and brain |
| beta 3 receptors... | stimulate lipolysis |
| alpha 1 receptors... | stimulate smooth muscle in blood vessels of digestive system |
Created by:
Lyd543
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