Anatomy
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which structures passes through the inguinal canal in males?
The inguinal canal allows the ductus deferens, testicular artery, vein, and nerves to pass through into the scrotum in males.
The atlanto-occipital joint permits which movements?
nodding movements (flexion and extension)
In ruminants, the esophageal groove is most functional in
suckling calves, allowing milk to bypass the rumen and flow directly into the abomasum
The cranial cruciate ligament attaches to which part of the tibia?
inserts on the cranial intercondylar area of the tibia and helps prevent cranial displacement of the tibia
Which species lacks a gallbladder?
The horse does not have a gallbladder and instead secretes bile continuously into the duodenum
The brachial plexus is formed by ventral branches of spinal nerves
C6-T2
Which bone contributes to the orbit in dogs?
The frontal bone forms a significant part of the orbital rim in dogs and other species.
The linea alba is composed of:
Collagen fibers from aponeuroses It is a fibrous structure that runs down the midline of the abdomen It is formed by the interweaving of the aponeuroses (flat tendinous sheets) of the external oblique, internal oblique, and transversus abdominis muscles. It is primarily composed of dense regular connective tissue rich in collagen fibers. There is no muscle or fat in it, which makes it a preferred site for surgical incisions, especially in midline laparotomy, due to minimal bleeding and good healing.
The fibrous structure connecting the left and right ventricle externally is called:
The paraconal interventricular groove lies on the auricular (left) surface of the heart and marks the external location of the interventricular septum.
In domestic animals, the diaphragm is innervated by:
The phrenic nerve, formed by cervical spinal nerves (C5–C7), provides motor and sensory innervation to the diaphragm.
The gluteal region is innervated primarily by the:
Sciatic nerve Provides motor and sensory innervation to the hindlimb including gluteal muscles.
Which species has the most well-developed vomeronasal organ?
Pig Used for pheromone detection; highly developed in pigs for mating behavior.
The hoof of a horse corresponds anatomically to the:
The hoof encloses and protects the distal phalanx (P3 or coffin bone).
Which species has a complete bony orbit?
Horse, ox, sheep, pig
The trachea bifurcates at the level of:
T5
The longest cranial nerve is:
Vagus
Which bone forms the floor of the cranial cavity?
The occipital bone forms the caudal portion and contributes to the floor of the cranial cavity.
Which nerve innervates the diaphragm in animals?
Phrenic nerve 🧠 Explanation: The phrenic nerve, arising from cervical spinal nerves (C3–C5), controls the diaphragm and is essential for respiration.
In ruminants, which structure prevents regurgitation of ingesta during eructation?
Lower esophageal sphincter 🧠 Explanation: The lower esophageal sphincter (cardiac sphincter) in ruminants prevents regurgitation during eructation, maintaining unidirectional movement.
Uncinate process occurs in
ribs of fowl
Corpora quadrigemina is a part of
midbrain
Trochlear nerve is
motor nerve, smallest
fovea capitis in horses related to which ligament
check ligament (accessory lugament of femur)
preputial diverticulum found in
boar