Veterinary Anatomy Quiz 37 Quiz InstructionsThis quiz consists of 20 multiple-choice questions.You will be awarded 5 marks for each correct answer. Question 1: Which spinal cord segments contribute to the origin of the radial nerve in dogs and cats, and what functional group of muscles does it primarily innervate?A) C5-C7; flexors of the elbow jointB) C7-T1; extensors of the elbow, carpal, and digital jointsC) C8-T1; extensors of the shoulder and arm jointsD) T1-T2; flexors of the carpus and digits Question 2: From which spinal cord segments does the ulnar nerve originate in the dog and cat?A) C6-C7B) C7-C8C) C8-T1D) T1-T2 Question 3: A canine patient presents with a complete inability to fix the elbow, rendering the limb unable to bear weight, with the toes knuckled over presenting their dorsal surface to the ground. This indicates serious damage to the radial nerve at which location?A) Distal to the origin of the tricipital branches within the forearmB) Proximal to the origin of the tricipital branches in the armC) Immediately distal to its division into deep and superficial branchesD) Within the supinator muscle belly under the lateral collateral ligament Question 4: Evaluate the following statements regarding forelimb nerve dysfunction in the dog: I. Dysfunction of the median nerve has little effect on gait but can lead to carpal overextension and slightly raised claws during standing. II. Paralysis of the ulnar nerve leads to immediate, severe flexion of the carpus during weight-bearing. III. The ulnar nerve passes over the medial epicondyle of the humerus, where it is palpable.A) Only I is correctB) Only II is correctC) I and III are correctD) I, II, and III are correct Question 5: Which anatomical structure of the pelvis is palpable in the dog but is completely lacking in the cat?A) Ischial tuberB) Sacrotuberous ligamentC) Dorsal spine of the iliumD) Greater trochanter of the femur Question 6: Match the cutaneous autonomous zones of the canine/feline forelimb with their corresponding nerves based on Figure 16-12: Column I: 1. Axillary nerve, 2. Musculocutaneous nerve, 3. Ulnar nerve, 4. Radial nerve. Column II: p. Yellow zone, q. Green zone, r. Blue zone, s. Red zone.A) 1-q, 2-s, 3-p, 4-rB) 1-p, 2-q, 3-r, 4-sC) 1-s, 2-r, 3-q, 4-pD) 1-q, 2-p, 3-s, 4-r Question 7: What is the most common direction of displacement of the femoral head during coxofemoral luxation in the dog and cat?A) VentrocaudallyB) DorsocraniallyC) DorsocaudallyD) Ventrocranially Question 8: Assertion (A): A measured Norberg angle of 98 degrees on a ventrodorsal pelvic radiograph of a dog suggests hip dysplasia. Reason (R): A Norberg angle of less than 105 degrees indicates displacement of the femoral head relative to the acetabulum.A) Both A and R are true and R is the correct explanation of AB) Both A and R are true but R is not the correct explanation of AC) A is true but R is falseD) A is false but R is true Question 9: Regarding the arterial blood supply to the head of the femur, what species and age difference is observed concerning the arteries in the ligament of the femoral head?A) They are highly significant in adult dogs but completely absent in cats of all agesB) They are of little significance in dogs but make a major contribution in the kittenC) They supply the entire proximal femur in adult cats but degrade rapidly in kittensD) They are crucial in puppies but regress completely in adult dogs Question 10: Arrange the following canine pelvic and hindlimb skeletal structures in the correct chronological sequence of their typical growth plate closure/fusion, from earliest to latest: I. Ilium, II. Greater trochanter, III. Tibial tuberosity, IV. Iliac crest.A) I, II, III, IVB) II, I, III, IVC) I, III, II, IVD) III, I, II, IV Question 11: Match the following thigh muscles of the dog with their relative positions on a transverse section of the mid-thigh (refer to Figure 17-2): Column I: 1. Sartorius, 2. Vastus lateralis, 3. Semitendinosus, 4. Gracilis. Column II: p. Cranial-most superficial muscle, q. Lateral muscle adjacent to femur, r. Caudomedial superficial muscle, s. Medial-most superficial muscle.A) 1-p, 2-q, 3-r, 4-sB) 1-s, 2-q, 3-p, 4-rC) 1-p, 2-r, 3-q, 4-sD) 1-s, 2-p, 3-r, 4-q Question 12: Which muscle of the feline hindlimb, lacking in the dog, arises from the second to fourth caudal vertebrae and inserts lateral to the patella in the fascia lata?A) Gluteofemoral muscleB) Abductor cruris caudalisC) Tensor fasciae antebrachiiD) Caudal sartorius muscle Question 13: When palpating the femoral pulse on the medial side of a dog's thigh, which muscular landmark acts as an obtrusive, fusiform swelling that guides the clinician's fingers directly to the adjacent femoral artery?A) Gracilis muscleB) Pectineus muscleC) Adductor muscleD) Sartorius muscle Question 14: A veterinarian performs an orthopedic exam on a dog and notes excessive caudal displacement of the tibia relative to the femur when the stifle is flexed. What injury does this 'caudal drawer' sign indicate?A) Rupture of the cranial cruciate ligamentB) Rupture of the caudal cruciate ligamentC) Tear of the medial collateral ligamentD) Luxation of the patella Question 15: Assess the validity of the following statements regarding the stifles of dogs and cats: I. The lateral meniscus has an additional restraint via a direct attachment to the lateral femorotibial ligament. II. Cats possess both cranial and caudal intermeniscal ligaments, whereas dogs only have a cranial one. III. Meniscal horns have a richer blood and nerve supply than their central portions.A) Only III is correctB) I and II are correctC) II and III are correctD) I, II, and III are correct Question 16: Into which vascular structure does the lateral saphenous vein empty after traveling along the caudal border of the gastrocnemius muscle in the dog?A) Femoral veinB) Caudal vena cavaC) Cranial tibial veinD) Medial saphenous vein Question 17: Match the canine hindlimb arteries with their anatomical trajectories or branching: Column I: 1. Cranial tibial artery, 2. Saphenous artery, 3. Cranial branch of saphenous artery, 4. Caudal branch of saphenous artery. Column II: p. Passes between tibia and fibula, q. Crosses medial aspect of stifle before dividing, r. Remains superficial and supplies dorsal structures of the paw, s. Accompanies tibial nerve into plantar paw aspect.A) 1-p, 2-q, 3-r, 4-sB) 1-q, 2-p, 3-s, 4-rC) 1-p, 2-r, 3-q, 4-sD) 1-s, 2-q, 3-r, 4-p Question 18: Assertion (A): Complete paralysis of the common peroneal nerve in a dog leads to an inability to extend the digits, causing them to rest on their dorsal surfaces. Reason (R): The common peroneal nerve innervates the dorsal crural muscles, which act as the digital extensors and hock flexors.A) Both A and R are true and R is the correct explanation of AB) Both A and R are true but R is not the correct explanation of AC) A is true but R is falseD) A is false but R is true Question 19: When passing a stomach tube in a horse, what specific anatomical structure occupying the nasoincisive notch must be avoided by guiding the tube into the lower part of the nostril?A) Alar foldB) Nasal diverticulumC) Nasolacrimal ductD) Dorsal lateral nasal cartilage Question 20: Evaluate the following statements regarding external structures of the equine head: I. A straight profile is generally preferred in horses, but 'dishing' is common in Arabian breeds. II. Cushing's disease may cause a conspicuous swelling due to fat deposition above the upper eyelid. III. Depletion of the fat pad between the temporalis and periorbita causes a haggard appearance in poor-condition horses.A) Only I is correctB) I and II are correctC) II and III are correctD) I, II, and III are correct
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