HomeCoursesMEDSCI 201: Human Structure and FunctionLecture 21 Lecture 21 0% Question 1 of 24 What type of receptors does the somatosensory system receive information through? (4)= Mechanoreceptors, thermoreceptors, nociceptors, proprioceptors What type of receptors does the somatosensory system receive information through? (4)= Mechanoreceptors, thermoreceptors, nociceptors, proprioceptors Question 1 of 24Question 2 of 24 Where is this information received?= In the primary sensory cortex Where is this information received?= In the primary sensory cortex Question 2 of 24Question 3 of 24 What are the morphological differences between mechanoreceptor types? (3)= Free nerve endings, ecapsulated receptors, unencapsulated What are the morphological differences between mechanoreceptor types? (3)= Free nerve endings, ecapsulated receptors, unencapsulated Question 3 of 24Question 4 of 24 What are the unencapsulated mechanoreceptors? = Merkel cells What are the unencapsulated mechanoreceptors? = Merkel cells Question 4 of 24Question 5 of 24 What are the encapsulated receptors? (3)= Ruffini, pacinian, meissner's What are the encapsulated receptors? (3)= Ruffini, pacinian, meissner's Question 5 of 24Question 6 of 24 Where does the dorsal rammus receive sensory information from?= Receptors on the back Where does the dorsal rammus receive sensory information from?= Receptors on the back Question 6 of 24Question 7 of 24 Where does the ventral rammus receive sensory information from? (2)= Front of the body and limbs Where does the ventral rammus receive sensory information from? (2)= Front of the body and limbs Question 7 of 24Question 8 of 24 Which rammus forms the brachial plexus?= Ventral Which rammus forms the brachial plexus?= Ventral Question 8 of 24Question 9 of 24 What do the dorsal/posterior columns carry?= Fine touch, pressure, vibration information What do the dorsal/posterior columns carry?= Fine touch, pressure, vibration information Question 9 of 24Question 10 of 24 What information does the anterior spinothalamic tract carry?= Crude touch, pressure What information does the anterior spinothalamic tract carry?= Crude touch, pressure Question 10 of 24Question 11 of 24 What information does the lateral spinothalamic tract carry?= Pain, temp What information does the lateral spinothalamic tract carry?= Pain, temp Question 11 of 24Question 12 of 24 What information do the posterior and lateral spinocereballar tracts carry?= Proprioception information to the cerebellum What information do the posterior and lateral spinocereballar tracts carry?= Proprioception information to the cerebellum Question 12 of 24Question 13 of 24 How are sensory tracts of the spinal cord arranged (sensory nerves of inferior/superior parts of body)? (2)= Inferior body: medial tracts, superior body: lateral tracts (dorsal columns) How are sensory tracts of the spinal cord arranged (sensory nerves of inferior/superior parts of body)? (2)= Inferior body: medial tracts, superior body: lateral tracts (dorsal columns) Question 13 of 24Question 14 of 24 How are sensory tracts of the spinal cord arranged (sensory nerves of proximal/distal parts of body)? (2)= Proximal: medial, distal: lateral (ventral horn of grey matter) How are sensory tracts of the spinal cord arranged (sensory nerves of proximal/distal parts of body)? (2)= Proximal: medial, distal: lateral (ventral horn of grey matter) Question 14 of 24Question 15 of 24 Describe the first order dorsal column neuron?= Pseudounipolar, enters dorsal root, through dorsal grey horn, ascends fasciulus, synapses cuneate of gracilus nuclei Describe the first order dorsal column neuron?= Pseudounipolar, enters dorsal root, through dorsal grey horn, ascends fasciulus, synapses cuneate of gracilus nuclei Question 15 of 24Question 16 of 24 Describe the second order neuron of the dorsal column - medial lemniscus tract?= From cuneate/gracile nuclei, decussates as internal arcuate fibres, ascend medial lemniscus tract, synapse at the VPN of the thalamus Describe the second order neuron of the dorsal column - medial lemniscus tract?= From cuneate/gracile nuclei, decussates as internal arcuate fibres, ascend medial lemniscus tract, synapse at the VPN of the thalamus Question 16 of 24Question 17 of 24 Describe the third order neuron of the dorsal column - medial lemniscus pathway?= From VPN of the thalamus, internal capsule, primary somatosensory cortex Describe the third order neuron of the dorsal column - medial lemniscus pathway?= From VPN of the thalamus, internal capsule, primary somatosensory cortex Question 17 of 24Question 18 of 24 Describe the 1st order neuron of the anterior spinothalamic tract?= Pseudounipolar neuron, dorsal root, synapse on dorsal grey horn Describe the 1st order neuron of the anterior spinothalamic tract?= Pseudounipolar neuron, dorsal root, synapse on dorsal grey horn Question 18 of 24Question 19 of 24 Describe the 2nd order neuron of the anterior spinothlamic tract?= From dorsal horn, decussates in spinal cord, through anterior spinothalamic tract, spinal lemniscus to VPN of the thalamus Describe the 2nd order neuron of the anterior spinothlamic tract?= From dorsal horn, decussates in spinal cord, through anterior spinothalamic tract, spinal lemniscus to VPN of the thalamus Question 19 of 24Question 20 of 24 Describe the 3rd order neuron of the anteriorspinothalamic tract?= From VPN of the thalamus, internal capsule, primary somatosensory cortex Describe the 3rd order neuron of the anteriorspinothalamic tract?= From VPN of the thalamus, internal capsule, primary somatosensory cortex Question 20 of 24Question 21 of 24 Describe the 1st order neuron of the lateral spinothalamic tract?= Enters through dorsal root, synapses dorsal horn Describe the 1st order neuron of the lateral spinothalamic tract?= Enters through dorsal root, synapses dorsal horn Question 21 of 24Question 22 of 24 Describe the 2nd order neuron of the spinothalamic tract?= From dorsal horn, decussate at segmental level, ascent lateral spinothalamic tract, spinal lemniscus to VPN of thalamus Describe the 2nd order neuron of the spinothalamic tract?= From dorsal horn, decussate at segmental level, ascent lateral spinothalamic tract, spinal lemniscus to VPN of thalamus Question 22 of 24Question 23 of 24 What is the spinal lemniscus composed of?= Nerve fibres from anterior and lateral spinothalamic tract What is the spinal lemniscus composed of?= Nerve fibres from anterior and lateral spinothalamic tract Question 23 of 24Question 24 of 24 Where does the spinal lemniscus ascend?= Lateral to the medial lemniscus Where does the spinal lemniscus ascend?= Lateral to the medial lemniscus Question 24 of 24 Loading...
