Async (3) Flashcards
What does somatotopic arrangement mean?
Arranged similarly to anatomic location
Where are the lower extremities of the homunculus located?
Medial
Where are the upper extremities of the homunculus located?
Superiolateral
What is the pathway of the motor neuron?
Upper motor neuron cell body in primary motor cortex goes to the spinal cord tract
Synapses on cell body of lower motor neuron then goes to spinal nerve which goes to peripheral nerve which goes to muscle
What type of system is the conscious sensory tracts?
3 neuron system
What is the pathway of the sensory neuron?
Peripheral receptor in hand travels through peripheral nerve and joins with spinal nerve
Then enters through a tract goes to thalamus and ends in primary somatosensory cortex
How many anterior spinal arteries are there?
1
What does the anterior spinal artery supply?
Anterior 2/3
How many posterior spinal arteries are there?
2
What does the posterior spinal artery supply?
Posterior 1/3
Where is the location of the paravertebral?
Posterior portion of thoracic cavity
Where is the location of the pre vertebral?
Anterior to vertebrae in abdomen area
What do pre and post ganglionic neurons do?
Synapse with eachother in one of the ganglia
Where are the ganglia in the sympathetic nervous system?
Close to spinal cord
Which splanchnics are in the sympathetic nervous system?
Cardiopulmonary and Abdominopelvic
How are the visceral afferents carried in the splanchnics?
From organs to spinal cord
How is the sympathetic carried in splachnics?
From spinal cord to organs
What do splachnics allow?
Neurons to travel in bundles
Where are the ganglia in the parasympathetic nervous system?
Close to the organs (long preganglionic to short post ganglionic)
What splanchics are in the parasympathetic nervous system?
Pelvic
What makes up the diencephalon?
Thalamus and hypothalamus
Thalamus
Relay station for sensory, motor, and autonomic info (emotions)
Hypothalamus
Motivation
Nutrition
Metabolism
Amygdala
Emotional regulation center
What type of tasks are in the supplementary motor area?
Bimanual and ordered tasks
What does the premotor area do?
Plans movements
What does Broca’s area do?
Speech and language (left hemisphere)
Primary somatosensory cortex
Conscious awareness of Somatosensation
Wernickes area
Language comprehension (left hemisphere)
What do the secondary sensory areas do?
Take information like size, shape, color and pairs them with a prior experience
Where do the parasympathetic visceral efferent run through?
Cranial nerves
Where do the sympathetic visceral efferent run through?
Vascular
What does cranial nerve 10 carry for every organ in the body?
Visceral afferent
What cranial nerves only carry visceral efferent?
3 and 7
What cranial nerves carry both visceral efferent and afferent?
9 and 10
What reflex does cranial nerve 9 have?
Gag
What are the layers of the scalp?
Skin
Connective tissue
Aponeurosis
Loose connective tissue
Pericranium
What makes up the larynx?
Thyroid cartilage
Epiglottis
Cricoid cartilage
Epiglottis
Covers trachea so food does not get in it
What makes up the pharynx?
Nasopharynx
Oropharynx
Laryngopharynx
What is in the anterior region of the carotid triangle?
Common carotid artery
Facial artery
Internal jugular vein
Cranial nerves 9,10,11, and 12
What is in the lateral region of carotid triangle?
Subclavian artery and vein
External jugular vein
Cranial nerve 12
Anterior rami of brachial plexus
Suprascapular nerve
Branches of cervical plexus
Phrenic nerve
What is Special sense of cranial nerve 7?
Taste on anterior 2/3 of tongue
What is Special sense of cranial nerve 9?
Afferent for gag and swallowing reflex (taste on posterior 1/3 of tongue)
What is special sense of cranial nerve 10?
Sensation of pharynx, larynx, and skin of external ear
What will the nasal retina do?
Cross optic chiasm (contralateral)
What will the temporal retina do?
Not cross optic chiasm (ipsilateral)
What makes up the bony labyrinth?
Perilymph
Cochlea
Vestibule
What makes up the membranous labyrinth?
Endolymph
Perilymph
Vestibular labyrinth
What detects rotary acceleration?
Semicircular canals (anterior, horizontal, posterior)
