Name:shasou Exercise 3: Neurophysiology of Nerve Impulses: Activity 5: The Action Potential: Measuring Its Absolute and Relative Refractory Periods Lab Report Pre-lab Quiz Results You scored 50% by answering 2 out of 4 questions correctly. 1. Which of the following occurs after the peak of the action potential? Your answer : b. Voltage-gated K+ channels open. Correct answer: d. All of these occur. 2. What is meant by Na+ channel inactivation? Your answer : a. The Na+ channel opens when the membrane
Premium Neuron Action potential Muscle
The contents of the pterygopalatine fossa include The terminal portion of the maxillary artery; The pterygopalatine ganglion; The maxillary division of the trigeminal nerve; and branches of these structures. Maxillary Artery The third‚ or pterygopalatine portion‚ of the maxillary artery enters the pterygopalatine fossa from the infratemporal fossa via the pterygomaxillary fissure | Maxillary artery and its distribution
Premium
separating the muscles into two osteofascial compartments: the anterior and the posterior compartments of the arm. The fascia merges with the periosteum (outer bone layer) of the humerus. The compartments contain muscles which are innervated by the same nerve and perform the same action.[citation needed] Two other muscles are considered to be partially in the arm: The large deltoid muscle is considered to have part of its body in the anterior compartment. This muscle is the main abductor muscle
Premium Brachial plexus
Laboratory 3 Brainstem and Cranial Nerves Associated radiology modules: BRAINSTEM‚ CRANIAL NERVES Brainstem BLOOD SUPPLY The major blood supply to the brain is from two pairs of arteries‚ the vertebrals and the internal carotids. In general‚ the vertebrals supply the brainstem‚ the caudal diencephalon and the caudal and inferior cerebrum. The carotids supply the rostral thalamus and hypothalamus‚ the basal ganglia and the remainder of the cerebrum. Vertebral Branches. The vertebral arteries
Premium Neuroanatomy
trigeminal nerve‚ except for the small area over the angle of the mandible and parotid gland‚ which is supplied by the great auricular nerve (C2 and C3). The points of an outcome of sensitive branches of a trigeminal nerve project on the vertical line which has been carried out between an internal and median third of supraorbital edge. The ophthalmic nerve supplies the skin of the forehead by means of the terminal cutaneous branches. They are: supraorbital nerve and supratrochlear nerve‚ which come
Premium
The action of lifting an arm can seem like a thoughtless movement‚ however‚ there is complex and intricate process that goes on within the human body to make that small movement happen. It involves bones‚ muscles‚ and nerves to complete this process‚ but it would not be able to start without a certain subconscious thought beforehand. Lateral abduction of the arm is defined as raising the humerus‚ radius‚ and ulna bones to ninety degrees‚ parallel to the ground‚ with the elbow extended‚ and wrist
Premium Brachial plexus
microvilli that project through pores and chemically sense food. Gustatory receptor cells communicate with cranial nerve axon endings to transmit sensation to the brain. There are five taste sensations located on the tongue. They are sweet located front middle‚ sour located middle sides‚ salty located front side/tip‚ bitter located back‚ and umami located posterior pharynx. The cranial nerves that are associated with our taste sense are VII Facial located within the tongue‚ IX Glossopharyngeal located
Premium Olfaction Ear Eye
Sciatic Pain Keyword: Back Pain Therapy What is the Sciatic Nerve? The sciatic nerve is the most massive single nerve in the body that bridges the spine and the lower extremities. It is fed by a total of five nerves originating from the spinal cord‚ transcending the length of the lower spine to the buttocks‚ branching out‚ and continuing to the foot. It innervates the skin and muscles of the lower limbs via the tibial and peroneal nerves. It also provides strength to the legs and is responsible for
Premium Muscle Spinal disc herniation Pain
Abstract Paralysis of a facial nerve (i.e. CN VII) is frequently diagnosed as Bell’s palsy. Patients who suffer from Bell’s palsy often experience unilateral loss of facial muscle function which presents as drooping of the eyelid and corner of mouth‚ impaired taste‚ hypersensitive hearing‚ and general loss of facial muscle function on the affected side of the face. Loss of nerve function occurs as a result of inflammation at the geniculate ganglion which causes nerve damage and may eventually lead
Premium
nervous‚ integumentary‚ and muscular 2. List the names of the specific structures that had to be reattached. Specific Bone: Humerus ; Specific Muscles: Biceps brachii‚ brachialis‚ triceps ; Specific nerves: Median nerve‚ ulnar nerve‚ radial nerve‚ musculocutaneous nerve‚ antebrachial cutaneous nerves ; Specific Blood Vessels: Brachial artery‚ superior and inferior collateral artery‚ profunda brachii artery and veins‚ cephalic vein‚ basilic vein‚ and other venous tributaries 3. What organ system
Premium Brachial plexus Forearm Heart