I: Foundational Knowledge Flashcards
(153 cards)
anaphys
planes of section (3)
frontal:coronal, sagittal:median, horizontal:axial
anaphys
directional nomenclature (5)
cranial:caudal, ventral:dorsal, medial:lateral, proximal:distal, flexion:extension
anaphys
major body cavities (2)*
dorsal, ventral (includes subcavities: thoracic and abdominal)
*separated by diaphragm
anaphys
tissue types (4)
epithelial, connective, muscular, nervous
anaphys
relationship between input and output of neurons
dendrites:input :: axons:output
anaphys
relationship between myelination in the CNS and PNS
oligodendrocytes myelinate axons in the CNS :: Schwann cells myelinate axons in the PNS
anaphys
action potentials (APs) (6)
specialized by axons, originate at the trigger zone, insulated by myelin sheath, all-or-nothing (threshold is reached or is not reached), terminate at boutons, resting potential restored by Na+/K+ pump
anayphys
major divisions of the PNS (2)*
somatic: action and awareness :: autonomic/visceral:detects and acts on body’s internal environment
* autonomic/visceral subdivided into parasympathetic (homeostasis) and sympathetic (fight or flight)
anaphys
cranial nerves V and VII through XII
V:trigeminal, VII:facial, VIII:vestibulocochlear, IX:glossopharyngeal, X:vagus, XI:spinal accessory, XII:hypoglossal
anaphys
trigeminal nerve (5)*
CN V, three major branches (ophthalmic, maxillary, mandibular), face sensation, muscles of mastication and tensor tympani
*oral stage of swallowing
anaphys
facial nerve (4)*
CN VII, taste anterior 2/3 tongue, facial expression, salivation
*oral stage of swallowing AND speech articulation
anaphys
glossopharyngeal nerve (5)*
CN IX, taste posterior 1/3 tongue, sensation of middle ear and upper pharynx, motor innervation of stylopharyngeus, gag reflex
*oral and pharyngeal stages of swallowing
anaphys
vagus nerve (7)
CN X, sensation of lower pharynx, motor innervation of pharyngeal-laryngeal muscles of soft palate, velum elevation, gag reflex, VF tension, add-abduction
anaphys
spinal accessory nerve (2)
CN XI, motor innervation of sternocleidomastoid and trapezius muscles (for head turning and shoulder elevation)
anaphys
hypoglossal nerve (3)
CN XII, motor innervation of intrinsic tongue muscles, oral stage of swallowing (bolus formation and propulsion)
anaphys
CNS meninges layers (3)
meninges cover CNS in three protective layers (pia, arachnoid, dura matter** – think PAD)
**listed from deep to superficial
anaphys
CSF (3)
cerebrospinal fluid, flows between pia and arachnoid layers of meninges, brain floats in CSF for protection from mechanical injury
anaphys
dura mater (2)
encapsulates brain and spinal cord, physically separates major regions of the brain
anaphys
in reference to separation between the brainstem and the spinal cord, ‘There is continuity in much of the neuroanatomy, but one identifying feature is that…’
‘…the corticospinal fibers in the pyramidal tracts cross the midline (decussate) in the medulla and the travel in the lateral corticospinal tracts within the spinal cord.’
anaphys
brainstem (3)
region of the brain spanning between forebrain and spinal cord, the route through which nearly all neural information travels between the body and the brain, three segments (medulla oblongata, pons, midbrain)
anaphys
medulla oblongata of the brainstem and CN involvement (2)
X:larynx, pharynx and upper esophagus, XII:tongue
anaphys
pons of the brainstem and CN involvement (2)
V:mastication and sensory nuclei for the head, VII:facial expressions
anaphys
cerebellum (2)
important role in motor control, lesions do not cause paralysis but may cause ataxia
anaphys
reticular formation (3)
centered primarily in the pons, coordinate muscle functions of the body and head, guide attention and arousal