All Free Veterinary Science MCQs with Answers

• A. A wound communicating with the fracture
• B. Crepitus during limb examination
• C. Pain on movement of the limb
• D. Swelling around the fracture site

Explanation: An open fracture communicates with the external environment through a skin or mucosal wound, exposing the fracture to contamination.

• A. To increase postoperative wound contraction
• B. To reduce regurgitation and aspiration risk
• C. To prevent all anaesthetic hypotension
• D. To accelerate absorption of injectable drugs

Explanation: Fasting reduces the volume of stomach contents and therefore lowers the risk of regurgitation and aspiration during anaesthesia.

• A. Dry heat at atmospheric pressure
• B. Ultraviolet light exposure
• C. Saturated steam under pressure
• D. Chemical disinfection in alcohol

Explanation: An autoclave uses saturated steam under pressure to transfer heat efficiently and destroy microorganisms, including bacterial spores.

• A. Active lymphatic pumping
• B. Continuous negative pressure
• C. Intermittent arterial pressure
• D. Gravity and capillary action

Explanation: A Penrose drain allows fluid to move along its surface by gravity and capillary action.

• A. A lag screw
• B. A cerclage wire
• C. A bone plate spacer
• D. An intramedullary pin

Explanation: A lag screw compresses one fracture fragment against another when the near cortex is overdrilled and the far cortex provides the thread…

• A. Correction of gastric dilatation
• B. Removal of urinary bladder calculi
• C. Repair of a ruptured diaphragm
• D. Excision of a renal tumour

Explanation: Cystotomy is an incision into the urinary bladder and is commonly performed to remove bladder stones.

• A. Ureteral trigone
• B. Round ligament of the liver
• C. Ovarian pedicle
• D. Caudal mesenteric artery

Explanation: The ovarian pedicle contains the ovarian artery and vein and must be ligated securely during ovariohysterectomy.

• A. L6 and L7
• B. T13 and L1
• C. S1 and S2
• D. L7 and S1

Explanation: The lumbosacral epidural space is located between the seventh lumbar vertebra and the first sacral vertebra.

• A. Cushing inverting pattern
• B. Simple interrupted pattern
• C. Vertical mattress pattern
• D. Simple continuous pattern

Explanation: The Cushing pattern is an inverting pattern that does not penetrate the lumen of the organ.

• A. Increase wound pigmentation
• B. Remove devitalised tissue
• C. Prevent all wound contraction
• D. Replace lost blood volume

Explanation: Debridement removes dead tissue, foreign material and heavily contaminated tissue that can support bacterial growth.

• A. Mild transient hypothermia
• B. Temporary reduction in appetite
• C. Progressive septic peritonitis
• D. Moderate postoperative bruising

Explanation: Anastomotic leakage releases intestinal contents into the peritoneal cavity and can cause progressive septic peritonitis.

• A. Ureteral reimplantation
• B. Perineal herniorrhaphy
• C. Cystopexy
• D. Perineal urethrostomy

Explanation: A perineal urethrostomy creates a wider permanent opening in the distal urethra, commonly in male cats with recurrent obstruction.

• A. Clean-contaminated wound
• B. Clean wound
• C. Contaminated wound
• D. Dirty or infected wound

Explanation: A clean-contaminated wound involves controlled entry into a hollow viscus such as the gastrointestinal or respiratory tract.

• A. Seal the intestinal lumen permanently
• B. Provide temporary tissue traction
• C. Dissolve intraluminal clots
• D. Measure abdominal pressure

Explanation: Stay sutures provide gentle traction and help align the intestinal segments during anastomosis.

• A. Improved epithelial migration
• B. Faster collagen remodelling
• C. Wound edge ischemia and dehiscence
• D. Reduced bacterial contamination

Explanation: Excessive tension compresses small blood vessels at the wound edges, causing ischemia and increasing the risk of dehiscence.

• A. Mandibular lymph node
• B. Prescapular lymph node
• C. Retropharyngeal lymph node
• D. Superficial inguinal lymph node

Explanation: The caudal mammary glands commonly drain toward the superficial inguinal lymph nodes.

• A. Ultrasonic surgical device
• B. Metzenbaum scissors
• C. Allis tissue forceps
• D. Gelpi retractor

Explanation: An ultrasonic surgical device cuts tissue and seals small vessels through high-frequency mechanical vibration.

• A. Pupillary light reflex
• B. Oculocardiac reflex
• C. Withdrawal reflex
• D. Patellar reflex

Explanation: Traction on the globe or extraocular muscles can stimulate the oculocardiac reflex, producing vagally mediated bradycardia.

• A. Purse string inversion pattern
• B. Horizontal mattress eversion pattern
• C. Simple interrupted appositional pattern
• D. Continuous Lembert inversion pattern

Explanation: An appositional pattern brings the bladder edges together accurately while causing minimal reduction in lumen size.

• A. To deliver antibiotics into the wound
• B. To prevent all bacterial entry into skin
• C. To provide permanent structural support
• D. To remove accumulating fluid by negative pressure

Explanation: An active drain uses negative pressure to remove blood, serum, or contaminated exudate from a wound.