Snake anatomy quiz

WIKIQUIZ

1

The Jacobson's organ in snakes play a role in...? detecting low airborne frequency sound propulsion of semen during copulation calcium metabolism the shedding cycle and growth vomeronasal chemoreception Please select an option Incorrect The columella, an ossicle, extends from the inner ear to the quadrate bone and may detect vibrations (low frequency sound between 150 and 600 Hz) from the ground through the jaw WikiVet Article: Snake Special Senses. Incorrect The Jacobson's organ is not associated with the snake reproductive system. Hemipenes, paired male copulatory organs, may have protuberances that help grip the female and the surface groove (sulcus spermaticus) is involved in the propulsion of semen WikiVet Article: Snake Special Senses. Incorrect The parathyroids play a very important role in calcium metabolism. There are usually two pairs of parathyroid glands which measure about 0.5-1.0 mm in diameter and are located cranial to the heart WikiVet Article: Snake Endocrine System. Incorrect The thyroid, which is under pituitary control, appears to play an important role in shedding and growth. Accidental surgical removal of the thyroid may increase shedding, which is the reverse to lizards. In some species it has been reported that thyroid extract administration inhibits moulting WikiVet Article: Snake Endocrine System. Correct! Also known as the vomeronasal organ, the Jacobson's organ forms part of the chemosensory system in snakes which is analagous to 'taste' WikiVet Article: Snake Special Senses.

2

What are the gastrosteges of snakes? A single row of large ventral scales in that assist in locomotion Cutaneous appendages at the base of the tail that play a role in defense Clear scales that cover the eyes and are shed during ecdysis Fangs in vipers and pit vipers that fold caudodorsally and are sheathed when the mouth is closed Infrared–sensitive receptors that allow them to ‘see’ the radiated heat of their prey Please select an option Correct! Gastrosteges are enlarged ventral scales on the body which aid locomotion. The number of gastrosteges may be used in snake identification WikiVet Article: Snake Skin. Incorrect These cutaneous appendages are known as Hemepenes. Gastrosteges are enlarged ventral scales on the body which aid locomotion WikiVet Article: Snake Skin. Incorrect Scales that cover the eyes are called spectacles (also ocular scale, eye cap and brille). Gastrosteges are the enlarged ventral scales on the body which aid locomotion WikiVet Article: Snake Skin. Incorrect This snake dentition is known as solenoglyphous. Gastrosteges are enlarged ventral scales on the body which aid locomotion. The number of gastrosteges may be used in snake identification WikiVet Article: Snake Skin. Incorrect These receptors occur in the labial pits of boids and pythons, and the heat pits of pit vipers and are used to located warm-blooded prey. Gastrosteges are enlarged ventral scales on the body which aid locomotion WikiVet Article: Snake Skin.

3

In general, the caudal third of a snake does not contain which of the following? Kidneys Liver Pancreas Small intestine Spleen Please select an option Incorrect The kidneys can be found in the caudal third of the body. Although the internal organisation of organs vary between snake families and genera, it is important to know their approximate position during a physical examination. This can be done by dividing the body into thirds from snout to vent. Wikivet Article: Snake Physical Examination. Incorrect The liver is the largest internal organ and can be found in the middle third of the body. Although the internal organisation of organs vary between snake families and genera, it is important to know their approximate position during a physical examination. This can be done by diving the body into thirds from snout to vent. Wikivet Article: Snake Physical Examination. Correct! The pancreas can be found in the caudal third of the body. Although the internal organisation of organs vary between snake families and genera, it is important to know their approximate position during a physical examination. This can be done by diving the body into thirds from snout to vent. Wikivet Article: Snake Physical Examination. Incorrect The small intestine can be found in the caudal third of the body. Although the internal organisation of organs vary between snake families and genera, it is important to know their approximate position during a physical examination. This can be done by diving the body into thirds from snout to vent. Wikivet Article: Snake Physical Examination. Incorrect The spleen can be found in the caudal third of the body. Although the internal organisation of organs vary between snake families and genera, it is important to know their approximate position during a physical examination. This can be done by diving the body into thirds from snout to vent. Wikivet Article: Snake Physical Examination.

4

When sexing a snake, particular care must be taken not to perforate the ... of a female? ovaries cranial oviduct caecum musk glands spleen Please select an option Incorrect The ovaries of snakes are elongate and are located near the pancreas/spleen/gall bladder, cranial to the kidneys. Rough use of probes when sexing snakes can cause damage. In females it is possible to perforate the musk glands and allow the probe to slide in as far as it would in a male snake. Wikivet Article: Snake Physical Examination and Snake Reproductive System. Incorrect The cranial oviduct contains a region of mucosal folds and alveolar glands, the receptaculum seminis, that serves for sperm storage allowing continued fertility from one insemination. Musk glands is the correct answer. Wikivet Article: Snake Physical Examination and Snake Reproductive System. Incorrect A caecum is not found in all snake species. Rough use of probes when sexing snakes can cause damage. In females it is possible to perforate the musk glands and allow the probe to slide in as far as it would in a male snake. Wikivet Article: Snake Physical Examination and Snake Reproductive System. Correct! In males a sexing probe enters the hemipenes (10-12 scale rows) while in females it may enter the musk glands (2-3 scale rows). Take care since rough use of probes can cause damage. In females it is possible to perforate the musk gland and allow the probe to slide in as far as it would in a male snake. Wikivet Article: Snake Physical Examination. Incorrect The spleen is located next to the spleen and gall bladder, near to the ovaries. Rough use of probes when sexing snakes can cause damage. In females it is possible to perforate the musk gland and allow the probe to slide in as far as it would in a male snake. Wikivet Article: Snake Physical Examination.