HomeCoursesMEDSCI 201: Human Structure and FunctionLecture 20 Lecture 20 0% Question 1 of 39 Where does the spinal cord end?= L1 Where does the spinal cord end?= L1 Question 1 of 39Question 2 of 39 What replaces the spinal cord below L1?= Cauda equina What replaces the spinal cord below L1?= Cauda equina Question 2 of 39Question 3 of 39 What produces the larger amount of grey matter in the cervical vertebrae?= The cervical enlargement What produces the larger amount of grey matter in the cervical vertebrae?= The cervical enlargement Question 3 of 39Question 4 of 39 What produces the larger grey ventral horn in the cervical enlargement?= The larger motor nerve requirements of the arm, hand and fingers. What produces the larger grey ventral horn in the cervical enlargement?= The larger motor nerve requirements of the arm, hand and fingers. Question 4 of 39Question 5 of 39 What produces the larger grey dorsal horn in the cervical enlargement of the spinal cord?= The larger sensory nerve requirements of the hands and fingers What produces the larger grey dorsal horn in the cervical enlargement of the spinal cord?= The larger sensory nerve requirements of the hands and fingers Question 5 of 39Question 6 of 39 What is somatic vs visceral sensory/control? = Somatic is cognitive and voluntary sensory and motor control of the skeletal muscles. Visceral is autonomic and involuntary. What is somatic vs visceral sensory/control? = Somatic is cognitive and voluntary sensory and motor control of the skeletal muscles. Visceral is autonomic and involuntary. Question 6 of 39Question 7 of 39 Describe the layout of the ventral grey horn as it relates to the regions that corrospond to the medial/lateral aspect?= Medial is proximal whereas lateral is distal muscle innervation Describe the layout of the ventral grey horn as it relates to the regions that corrospond to the medial/lateral aspect?= Medial is proximal whereas lateral is distal muscle innervation Question 7 of 39Question 8 of 39 What are the lateral and anterior corticospinal tracts involved with?= Motor control What are the lateral and anterior corticospinal tracts involved with?= Motor control Question 8 of 39Question 9 of 39 What is the corticobulbar tract pathway?= Upper motor neurons, cranial nerve nuclei, cranial nerves What is the corticobulbar tract pathway?= Upper motor neurons, cranial nerve nuclei, cranial nerves Question 9 of 39Question 10 of 39 What is the corticospinal tract pathway?= Upper motor neurons, cerebral peduncles, medulla oblongata, pyramids (decussation), lateral corticospinal tract, ventral horn, lower motor neuron to skeletal muscle What is the corticospinal tract pathway?= Upper motor neurons, cerebral peduncles, medulla oblongata, pyramids (decussation), lateral corticospinal tract, ventral horn, lower motor neuron to skeletal muscle Question 10 of 39Question 11 of 39 Where does the anterior corticospinal tract decussate?= At the spinal cord segment Where does the anterior corticospinal tract decussate?= At the spinal cord segment Question 11 of 39Question 12 of 39 What muscles is the the lateral corticospinal tract involved with?= Limb muscles What muscles is the the lateral corticospinal tract involved with?= Limb muscles Question 12 of 39Question 13 of 39 What muscles is the anterior corticospinal tract involved with?= Muscles of the trunk What muscles is the anterior corticospinal tract involved with?= Muscles of the trunk Question 13 of 39Question 14 of 39 What is a nerve plexus?= Where spinal nerves come together to form a bundle What is a nerve plexus?= Where spinal nerves come together to form a bundle Question 14 of 39Question 15 of 39 What are the nerve plexus? (4)= Cervical plexus, brachial plexus, lumbar plexus, sacral plexus What are the nerve plexus? (4)= Cervical plexus, brachial plexus, lumbar plexus, sacral plexus Question 15 of 39Question 16 of 39 What spinal nerves are involved in the brachial plexus?= C5 - T1 What spinal nerves are involved in the brachial plexus?= C5 - T1 Question 16 of 39Question 17 of 39 What part of the body does the brachial plexus innervate?= The upper limbs What part of the body does the brachial plexus innervate?= The upper limbs Question 17 of 39Question 18 of 39 What are the branches of the nerve plexus? (3)= Superior trunk, middle trunk, inferior trunk What are the branches of the nerve plexus? (3)= Superior trunk, middle trunk, inferior trunk Question 18 of 39Question 19 of 39 What are the trunk divisions? (2)= Anterior, posterior What are the trunk divisions? (2)= Anterior, posterior Question 19 of 39Question 20 of 39 What are the cords of the trunks? (3)= Lateral, posterior, medial What are the cords of the trunks? (3)= Lateral, posterior, medial Question 20 of 39Question 21 of 39 What is the lateral cord made up of?= Anterior division of the superior and middle trunks What is the lateral cord made up of?= Anterior division of the superior and middle trunks Question 21 of 39Question 22 of 39 What is the posterior cord made up of?= Posterior division of the superior, middle and inferior trunks What is the posterior cord made up of?= Posterior division of the superior, middle and inferior trunks Question 22 of 39Question 23 of 39 What is the medial trunk made up of? = Anterior division of the inferior trunk What is the medial trunk made up of? = Anterior division of the inferior trunk Question 23 of 39Question 24 of 39 What do cords form?= Nerves What do cords form?= Nerves Question 24 of 39Question 25 of 39 What movement does innervation of the musculotaneos nerve produce?= flexion of the arm What movement does innervation of the musculotaneos nerve produce?= flexion of the arm Question 25 of 39Question 26 of 39 What muscles does the musculocutaneous nerve innervate? (3)= Coracobracialis, bicep, brachialis What muscles does the musculocutaneous nerve innervate? (3)= Coracobracialis, bicep, brachialis Question 26 of 39Question 27 of 39 What muscles of the posterior arm does the radial nerve innervate? (2)= Triceps, posterior compartment of the forearm What muscles of the posterior arm does the radial nerve innervate? (2)= Triceps, posterior compartment of the forearm Question 27 of 39Question 28 of 39 What movement does the radial nerve produce?= Extension What movement does the radial nerve produce?= Extension Question 28 of 39Question 29 of 39 What are the muscles of the posterior compartment? (3)= Anconeos, brachioradialis, extensor carpi radialis What are the muscles of the posterior compartment? (3)= Anconeos, brachioradialis, extensor carpi radialis Question 29 of 39Question 30 of 39 What is the extension of the deep brach of the radial nerve? Posterior interosseous nerveWhat is the extension of the deep brach of the radial nerve?== Posterior interosseous nerve Question 30 of 39Question 31 of 39 What muscles does the posterior interosseus nerve innervate?= The extensors that the radial nerve does not What muscles does the posterior interosseus nerve innervate?= The extensors that the radial nerve does not Question 31 of 39Question 32 of 39 What functionality remains when damage to the radial nerve occurs through a break in the humorous?= Some muscle groups of the triceps as it is innervated above common humerus breaks What functionality remains when damage to the radial nerve occurs through a break in the humorous?= Some muscle groups of the triceps as it is innervated above common humerus breaks Question 32 of 39Question 33 of 39 What muscles does the median nerve innervate? (2)= Flexor muscles of the anterior forearm and pronator muscles What muscles does the median nerve innervate? (2)= Flexor muscles of the anterior forearm and pronator muscles Question 33 of 39Question 34 of 39 What is the deep extension of the median nerve?= Anterior interosseus nerve What is the deep extension of the median nerve?= Anterior interosseus nerve Question 34 of 39Question 35 of 39 What does the anterior interosseus nerve innervate? = Deep muscles off the forearm. What does the anterior interosseus nerve innervate? = Deep muscles off the forearm. Question 35 of 39Question 36 of 39 What happens when the median nerve is damaged?= Some, but not all loss of flexion. What happens when the median nerve is damaged?= Some, but not all loss of flexion. Question 36 of 39Question 37 of 39 Why is not all flexion lost?= Brachioradialis is not innervated by the median nerve as it is in the posteror compartment of the forearm Why is not all flexion lost?= Brachioradialis is not innervated by the median nerve as it is in the posteror compartment of the forearm Question 37 of 39Question 38 of 39 What muscles does the ulnar nerve innervate?= Flexor carpi ulnaris, flexor digitorum profundus What muscles does the ulnar nerve innervate?= Flexor carpi ulnaris, flexor digitorum profundus Question 38 of 39Question 39 of 39 What is a result of damage to the ulnar nerve?= Abduction of the wrist, some loss of function What is a result of damage to the ulnar nerve?= Abduction of the wrist, some loss of function Question 39 of 39 Loading...
