KERR exams 4 Word Scramble
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Question | Answer |
dendrites | bring info into nerve cell body |
axon | carries motor impulses away from neuron |
nissl substance | grainy material in cytoplasm; consists of rough ER |
myelin sheath | insulator; represents concentric wrappings of lipids |
nodes of Ranvier | gaps; act to increase speed of nerve impulses down the axon |
3 layers | endoneurium,perineurium, epineurium |
what do neurons make? | proteins |
what do schwann cells make? | insulation |
neuroglial cells do what? | support |
4 types of nueroglial cells | astrocytes, oligodendrocytes, microglial, and ependymal cells |
astrocytes | basis of the blood-brain barrier |
oligodendrocytes | form the lipoprotein myelin for axons in the CNS |
microglial cells | the smallest and least numerous; phagocytic; they engulf invading microorganisms and dead/injured neurons |
ependymal cells | form the choroid plexus epithelium that secretes the cerebrospinal fluid |
rough ER does what? | protein synthesis |
golgi apparatus does what? | package synthesized products |
schwann cells create? | myelin |
what are the interveniing depressions of the cerebral cortex? | sulci |
the lateral sulcus divides what lobes? | frontal and parietal |
precentral cortex is..?? | the primary motor cortex which governs control of voluntary skeletal muscle function |
premotor cortex | responsible for complex intergrated motions |
prefrontal cortex | concerned with behavior and short term memory |
broca's area | controls motor speech |
poostcentral cortex | recieves initial info from 5 senses |
occipital lobe | responds to visual info |
temporal lobe | responds to auditory info |
primary auditory cortex | recieves sound impulses |
auditory associtaion cortex | interprets sound |
wernicke's area | responsible for comprehensive understanding of language |
the limbic system governs? | emotions, behavior and memory |
the thalamus | functions to distribute the incoming sensory info to regions of cerebral cortex |
the hypothalamus | regulates hormone release from pitutairy gland |
pineal body | thought to play a role in regulation of production and release of melatonin |
optic nerve carries...? | visual info to the retina |
oculomotor nerve provides..? | motor innervation to 4 of the 6 extraocular eye muscles as well as SM of iris |
the trochlear and abducens nerves provide...? | motor innercation 1 of the remaining eye muscles |
trigeminal nerve provides | motor innervation to the muscles of mastication and carry sensory info from the face, mucous mmembrances of mouth the teeth and the cornea |
facial nerve provides...? | motor innervation to muscles of facial expression |
glossopharryngeal nerve supplies..? | muscles of pharynx and conveys senestaion from taste buds |
vagus nerve | wanders through body providing motor innervation to muscles of parynx |
hypoglossal nerve provides...?? | motor innervation to tonngue muscles for speech and to assist in swallowing |
4 brain ventricles | two lateral ventricels (right and left), a single third and a 4th |
the pituitary stalk suspends...? | the pituitary gland |
tumors in the pituitary gland may...? | produce alterations to vision |
the circle of willis is believed to...? | equalize the blood pressure and blood flow between the 2 hemispheres |
gray matters requires more what than the white matter | blood |
what is most susceptible to stroke and embolism? | the internal carotid arteries |
31 pairs of spinal nerves | 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, 1 coccyxgeal |
sensory nerves bring info...? | IN |
3 layers of meninges | dura mater, arachnoid mater, pia mater |
dura mater | "hard mother" and is outermost component |
arachnoid mater | "spider mother" has web like projections |
subarachnoid space | contain cerebrospinal fluid |
pia mater | "tendor mother" covers surface of cord and brain |
meningitis | meningi get inflamed |
epidural space iss..? | outside the dura mater |
the wall of the eyeball is comprised of...? | 3 coats/tunics....the fibrous tunic, the vascular tunic, the nervous tunic |
the retina is in what tunic | the nervous tunic |
the superior rectus and inferior rectus | 2/6 extraocular muscles |
what is the fibrous tunic? | the "white of the eye" |
the suspensory ligament...? | alters the shape of the lens |
the iris..? | is the colored portion of the eye, and contains 2 groups of smooth muscle that control the size of the pupil opening |
optic disc | "blind spot"; insensitive to light |
fovea centralis | area of greatest visual acuity |
the eyeball has 2 types of fluids | known as humors, contained within 3 chambers- posterior, anterior and vitreous |
the ear is housed within | the protective petrous portion of the temporal bone |
the external ear contains... | the auricle, external auditory meatus and tympanic membrane (eardrum) |
the ext. auditory meatus includes... | hair, sebaceous glands and modified sweat glands known as ceruminous glands that secrete wax |
the middle ear cavity contains... | 3 ossicles, and the eustachian tube |
the inner ear incluedes | 3 semicircular canals for balancethe cochlea for sound detectionand the vestible |
sound causes... | vibration of the tymphanic membrane which results in movement of the auditory ossicles |
what moves when, when sound is heard | 1. malleus moves2. incus3. stapes |
the vestibular division recieves... | sensory impulses from vestibule and ampullae of semicircular canalss conveying info on equilibirum and balance |
the chochlear division... | transmits sensory info on hearing from the cochlea |
the cochlea is shaped like | a sea shell |
Created by:
melissan15
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