Create an account
Nerves that innervate deep neck muscles: geniohyoid, thyrohyoid
+levator scapulae, scalene, sternocleidomastoid, and trapezius muscles
Segmental cervical nerves (C1-C5)
Brachial plexus palpated
Just superior to the clavicle at the lateral border of the sternocleidomastoid muscle
Nerve activates muscles that pronate the forearm, flex the wrist and fingers and oppose the thumb
Nerve supplies sensation to the lateral palm, thumb, digits II-III and half of IV on the anterior surface, and the dorsum of digits II-IV
Nerve supplies the flexor carpi ulnaris and the medial part of the flexor digitorum profundus
Nerve wraps around the humerus in the radial groove, then runs around the lateral epicondyle of the elbow
Motor fibers innervate all the extensors of the upper limb, forearm supination, wrist and finger extension and thumb abduction
Pressure on the radial nerve caused by pressing it into the radial groove on the humerus
Saturday night paralysis (crutches)
Bending or stretching of the neck in a direction away from side of injury- Radial disorder
When individuals have difficulty making a fist and gripping objects "claw hand", there is damage in the
Carpal tunnel syndrome caused by repetitive flexion pressing nerve against the
Flexor retinaculum- median nerve
When long thoracic nerve is chronically compressed as when doing military presses, or activities such as rock climbing
The scapula "wings" out away from the thorax
Nerve provides sensation to skin of the genitals and proximal medial aspect of the thigh (inner thigh).
Ilioinguinal nerve (lumbar plexus) L1
Nerve sensory to the scrotum in males and labia majora in females
Genitofemoral nerve (lumbar plexus) L1-L2
Stimulation of this nerve causes the cremaster to contract which elevates the testes (cremasteric reflex).
Nerve motor to the adductor magnus, gracilis and obturator externus muscles
Obturator nerve (lumbar plexus)
Nerve motor to the quadriceps and sartorius muscles of the thigh and to the pectineus and iliacus
Nerve innervates short head biceps femoris,fibularis muscles, tibialis anterior, toe extensors.
Fibular nerve (Sciatic)
Nerve innervates muscles of perineum, urogenital diaphragm, anal & urethral sphincters.
Pudendal nerve (Sacral plexus)
Nerve innervates the knee joint, the fibularis longus and brevis muscles, tibialis anterior, extensor hallucis longus and extensors digitorum longus and brevis
Common fibular nerve
Nerve motor to the gluteus medius and minimus and to the tensor fascia latae
The superior gluteal nerve
Condition characterized by intense stabbing pain radiating over the course of the sciatic nerve from gluteal region to toes
Condition below the knee, injury to common fibular (peroneal) nerve innervating the tibialis anterior
Unable to dorsiflex the foot while walking which can cause the individual to stumble and fall
Calf muscles cannot plantar flex the foot resulting in a shuffling gait due to
Damage to tibial nerve
Loss of sensation corresponding to the region of skin supplied by the affected nerve due to
Damage/infection of spinal nerve or dorsal root ganglion
Asphyxiation may result if the ______ nerve is damaged. This nerve is derived from the _______plexus.
Type of receptor causes muscles to relax & lengthens in response to excessive tension
Golgi tendon organ
Pupils constrict when bright light strikes eye; sympathetic or parasympathetic?
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together