Study sets, textbooks, questions
Upgrade to remove ads
anatomy exam 3
Terms in this set (69)
In what stage of sleep are most of the skeletal muscles paralyzed and dreaming occurs?
A 67 y/o black woman w/ hypertension, hypercholesterolemia, and diabetes melitus trips and falls. Hits the side of her head superior to the auricle of the ear. She is unable to close her eye and the corner of her mouth droops. What cranial nerve was damaged?
Which of the following is NOT a function of the CSF?
Initiation of nerve impulses
Creatine phosphate functions in the muscle cell by:
Storing energy that will be transferred to ADP to resynthesize ATP
Which of the following is NOT a rotator cuff muscle?
A fibrous joint that is a peg-in-socket is called a ___ joint
Which of the following nerves does not arise from the brachial plexus?
What is the main function of the node in the eye?
Vision in dim light
Potentially damaging stimuli that result in pain are selectively detected by__
During muscle contraction, myosin cross bridges attached to which active sites?
A football player is injured when he plants his foot to make a cut and takes a hit on the left lateral knee. He suffers an injury referred to as the "unhappy triad". This injury involves the medial collateral ligament, the medial meniscus, and the___.
Anterior cruciate ligament
Mixed cranial nerves containing both motor and sensory fibers include all except which of the following?
A woman was startled by an extremely loud band that sounded like a gunshot. Her heartbeat
The effects of the sympathetic activators are long lasting, since norephinephrine is inactivated slowly. Also, the adrenal medulla releases this neurotransmitter, which adds to the long-lasting effects of adrenergic stimulation.
If you shine a light into one eye, both pupils will constrict. The best explanation for this is ___.
A sensory input from the retinas of both eyes converges at the optic chiasma and information from each eye is delivered to both the left and the right sides of the brain.
Second-order neurons of both the specific and nonspecific ascending pathways terminates in the ____.
Broca's area ____.
Is considered a motor speech area
Which ventricle is continuous with the central cranial?
Nerves that carry impulses toward the CNS only are ___.
What cells line the ventricles of the brain?
The contractile units of skeletal muscles are ___.
Regeneration within the CNS ___.
Is prevented due to growth-inhibiting proteins of oligodendrocytes
Muscle of the face that closes the eye
Long muscles in the neck that serve to rotate and flex the head
Triangular muscle that abducts the shoulder
Muscle on the medial aspect of the thigh that helps bring the legs together
The main effect of the warm-up period of atheletes, as the muscle contractions increases in
The availability of calcium and the efficiency of enzyme systems
Stores oxygen in muscle cells
What structure in skeletal muscle cells functions in calcium storage?
A sarcoplasmic reticulum
A fail or an improperly delivered gluteal injection could damage a large nerve and result in ___.
Which nerve is compressed in carpal tunnel syndrome?
The brain stem consists of the ___.
Midbrain, medulla, and pons
Excitation-contraction coupling requires which of the following substances?
Ca2+ and ATP
Your patient suffered serious head trauma in a head on accident. After a recovery period, you perform an EEG while he is awake and discover that he has delta waves. What might this indicate?
He suffered brain damage
The term central nervous system refers to the ___.
Brain and spinal cord
Arbor vitae refers to ____.
Cerebellar white matter
A motor neuron along with the muscle fibers it supplies is called a
The "resting and digesting" division of the autonomic nervous system is the ____.
Rigor mortis occurs because ____.
No ATP is available to release attached actin and myosin molecules
Which of the following surrounds the individual muscle cell?
An 18 y/o female suffers a stroke while at school. This results in her inability to form words although she knows what she wants to say. What area of the brain did the stroke affect?
Meningitis is inflammation of the covering of the brain and spinal cord that may be caused by fungi, bacteria, or viruses
The mechanism of contraction in smooth muscle is different from skeletal muscle in that ___.
The site of calcium regulation differs
A 65 y/o male presents to your clinic with an 8-month history of deteriorating vision in his left eye. He also notes during the visit that his right eye still has good vision, though he has noticed some recent difficulty seeing things at a distance. He appears to be a slightly obese, although well appearing adult man.
His review of systems is within normal limits except for mildly inflamed nasal corchae and watery eyes that he attributes to his "usual allergies". Corneal reflex, and pupillary refelec are all within normal limits. Pupils are equal, round, and reactive to light and intraocular pressure is within normal limits. Right eye is measured to be 20/30, left eye is 20/200. Patient denies past surgical history. Family history is noncontributory. Patient admits to having approximately 2 alcoholic drinks/day. Smoking history is significant at 76 pack years. He denies illicit drug use.
On fundoscopic exam, the left lens appears to have about 85% cloudy appearance, whereas the right lens has about 15%.
What is the cause of the clouded appearance of the lens?
Cataracts, caused by smoking
A fracture of the ethmoid bone could result in damage to cranial nerve I. which of the following is cranial nerve 1?
A 72 y/o Caucasian male presents to your clinic complaining of the "shakes". Upon exam, you notice that, at rest, his hands are following a rhythmic "pill rolling" pattern and he has a slight tremor. He also seems to have an expressionless face. When asked to retrieve an object across the room, he is observed having a shuffling gait and stooped posture. These are all characteristics of ___.
Striking the "funny bone" is actually stimulation of (or injury to) the ___.
In a roll-over accident, a man transected the spinal cord between T1 and L1. This would result in ____.
What is the functional unit of a skeletal muscle called?
Given these events:
1. Acetylcholine is released from synaptic vesicles
2. An action potential reaches the presynaptic terminal
3. Ca2+ ions diffuse into the cell
4. Acetylcholine is secreted from the presynaptic terminal by exocytosis
Choose the arrangement that lists the events in the order they occur when an action potential travels through the axon of a motor neuron.
Connective tissue sacs lined with synovial membranes that act as cushions in places where friction develops are called ____.
The part of a neuron that conducts impulses away from its cell body is called an ___.
Bell's palsy is ___.
Characterized by unilateral paralysis of facial muscle
Ms. X, Dr. B's favorite patient, arrives at the hospital with the following symptoms: drooping eyelids, fatigue and weakness of muscles, and difficulty breathing and swallowing. She was found to have mysthemia gravis, which is an autoimmune disease that destroys ___ receptors at the neuromuscular junction.
What is the purpose of cones in the retina?
A 23 y/o caucasion female patient presents with dizziness for 1 week. Otoscope (ear) exam is WNL (within normal limits) and Romberg test for the cerebellar dysfunction is negative. Problems in balance may follow trauma to which nerve?
Preparing the body for the "fight or flight" response is the role of the ___.
Sympathetic nervous system
What is the role of calcium ions in muscle contraction?
Bind to regulatory sites on troponin to remove contraction inhibition
Matthew was going on a cruise and decided to use scopolamine to prevent motion sickness. After application of the patch and before washing his hands, he rubs his eyes and his vision promptly becomes blurry. What happened to matthew?
He did not know that is was an anticholinergic agent that blocked the action of acetylcholine on the smooth muscle of the iris.
Which part of the sarcomere contains myosin only?
The vital centers for the control of heart rate, respiration, and blood pressure are located in the ___.
Pons and medulla
Starting at the spinal cord, the subdivisions of the trachial plexus are (in order)
Roots, Trunks, cords, branches
Epilepsy is characterized by excessive neuronal discharge.
Spastic paralysis suggests involvement of the ___.
Upper motor neurons
The blood brain barrier is effective against ___.
Metabolic wastes such as urea
After exonal injury, regeneration in peripheral nerves is guided by ___.
After nervous stimulation stops, what prevents Ach in the synaptic cleft from continuing to stimulate contraction?
olinesterase destroying the Ach
Articulations permitting only slight degrees of movement are ___.
Which of the following is the mildest consequence of traumatic brain injury?
Articular cartilage found at the ends of the long bones serves to ___.
Provide a smooth surface at the ends of synovial joints
Other sets by this creator
anatomy exam 4
anatomy exam 3
psych460 exam 1
history exam 2 transcriptions
Recommended textbook solutions
Hole's Human Anatomy and Physiology
David N. Shier, Jackie L. Butler, Ricki Lewis
Human Anatomy and Physiology Laboratory Manual, Fetal Pig Version
Elaine Marieb, Lori A. Smith
Seeley's Anatomy and Physiology
Andrew Russo, Cinnamon VanPutte, Jennifer Regan, Philip Tate, Rod Seeley, Trent Stephens
Body Structures and Functions
Ann Senisi Scott, Elizabeth Fong