The gag reflex utilizes cranial nerve IX for sensory and X for motor. The pupillary light reflex and ocular accommodation involves cranial nerve II for the sensory aspect and cranial nerve three for the motor application. The jaw jerk reflex uses cranial nerve V for both sensory and motor. The corneal (blink reflex) utilizes cranial nerve V for sensory and VII for motor.

The sciatic nerve is a large nerve that runs through the buttocks and down the lower limb. The sciatic nerve innervates skin of the leg, and muscles in the posterior thigh, leg, and foot. The sciatic nerve is derived from spinal nerves L4-S3. The L4-S3 nerve root also supplies the tibial nerve.

L4-S1 is the nerve root for the superior gluteal nerve. Common fibular nerve is supplied by spinal nerves L4-S2. The obturator and femoral nerves are derived from L2-L4.

The femoral nerve is a nerve in the thigh that innervates the skin on the upper thigh and inner leg and shin. It also innervates the muscles that extend the knee (quadriceps). It is the largest branch of the lumbar plexus and derives from spinal nerves L2-L4. The obturator nerve is also supplied by spinal nerves L2-L4.

The sciatic nerve is derived from spinal nerves L4-S3. The L4-S3 nerve root also supplies the tibial nerve. L4-S1 is the nerve root for the superior gluteal nerve. Common fibular nerve is supplied by spinal nerves L4-S2.

The ankle jerk (Achilles) reflex tests the nerve root S1, S2. Biceps reflex tests roots C5, C6. Brachioradialis tests C5, C6, C7. Triceps reflex tests C6, C7, C8 nerve roots. Patellar (knee jerk) reflex tests the L2, L3, L4 nerve roots. The hamstring reflex tests nerve roots L5 and S1.

Hemiballism describes a sudden, uncontrolled flinging movement; this occurs if there is damage/destruction of subthalamic nuclei. Chorea is an abnormal, involuntary movement that can be seen in Huntington's disease; it occurs after destruction of the caudate nucleus. Dystonias are abnormal movements and are most often referred to as resting tremors of Parkinson's disease. Parkinsons disease results from a loss of dopamine from the substantia nigra. 

A dermatome is an area of skin supplied by a single spinal nerve. Along the thorax and abdomen the dermatomes are stacked like coins/discs, each layer supplied by a different spinal nerve. Along the arms and legs the pattern is different. Symptoms that follow a dermatome may indicate a pathology that involves the nerve root. There are a number of important dermatomes one being the inguinal region innervated by the L1 nerve root.

A dermatome is an area of skin supplied by a single spinal nerve. Along the thorax and abdomen the dermatomes are stacked like coins/discs, each layer supplied by a different spinal nerve. Along the arms and legs the pattern is different. Symptoms that follow a dermatome may indicate a pathology that involves the nerve root. There are a number of important dermatomes one being the layer of the umbilicus innervated by the T10 nerve root.

Because comatose patients cannot visually track objects, brainstem function is assessed by testing the oculocephalic reflex. Making sure any cervical spine pathology, the patients eyelids are held open, and her head is turned to side. If the eyes move in the opposite direction, the oculocephalic reflex is said to be positive, and indicates that there is some intact brainstem function. Because it is reminiscent of the way a doll's eyes move, this test is sometimes called a doll's eyes test. 

An upper motor neuron lesion is an injury to the motor pathways of the central nervous system, before the level of the cranial nerve nuclei, or the ventral horn of the spinal cord. The key to this question is that the patient is an adult; in children, under the age of 2, a positive Babinski sign is a normal finding. However, a positive crossed adductor reflex, a positive pronator drift sign, and a positive Hoffman's reflex are always pathological, and may indicate an upper motor neuron lesion.

The anterior compartment of the thigh is a fascial compartment that contains groups of muscles with their blood supply and nerves. The anterior compartment contains the sartorius muscle and the quadriceps muscles (rectus femoris, vastus lateralis, vastus intermedius, and vastus medialis). The iliopsoas is sometimes considered a component of the anterior compartment of the thigh. The function of the muscles of the anterior compartment is to extend the knee and flex the hip. The anterior compartment is innervated by the femoral nerve (however, the iliopsoas is not innervated by the femoral nerve and is innervated by ventral rami of L1-L3). The blood supply of the anterior compartment is the femoral artery. The femoral artery supplies blood to the anterior compartment and is the largest blood vessel of the lower limb.