Snake Anatomy

Order and suborder

The scale over the cornea of the eye is called a

What is the purpose of the "pits" between the eyes and external nares?

Boas and pythons have multiple depressions in their upper and lower lips called ______ ______ which contain ______ ______.

The tongue protrudes through the ______ _____ in the rostral upper lip

Snakes have a single ossicle called a ________ which extends from the ______ ear to the _______ bone.

The rattle at the end of the tail is composed of several ______.

The scales on the ventral surface are called

Prior to shedding, the eyes will become cloudy due to _______ secretions

During shedding, the old skin and new skin first divides at the _______. Then the snake crawls out of the skin.

These are paired glands at the base of the tail

The adaptation of the mandible that allows for cranial kinesis

The _______ bone is loosely attached to the skull and mandibles which allows for skull movement while swallowing prey

Where are the vestigial pelvic girdles and hind limbs located?

The vestigial hind limbs are composed of _____ and _____.

In the male, this is used to stroke the female during courtship

This form of locomotion involves weaving from side to side

This type of movement is in a straight line and is used during hunting

This type of movement involves leaping sideways and results in traveling obliquely

Some tropical snakes travel from tree to tree by

Name the 6 rows of teeth

True/False, teeth are replaced when they are lost and may have several sets throughout their lifetime
True False

These teeth are attached on the lingual aspect of the jaw and are continually replaced

Fangs can be _______ or _______.

True/False - Only venomous snakes have fangs
True False

This term refers to dentition of non-venomous snakes

This term is for fangs that are erect and located in the back

This term is for fangs that are erect and located in the front of the mouth

This term is for fangs that are folded and located in the front of the mouth

These are modified labial salivary glands located on either side of the maxillae

Where is the tongue located?

The opening for the tongue in the oral cavity is called the

The forked appearance of the tongue is used to

The glottis is the opening to the _______ ______.

Some snakes have an enlarged epiglottis which does what?

When the mouth is closed, the laryngeal mound fits into the _____ _____ in the roof of the mouth which is the internal opening of the ______ ______.

These veins can be used for venipuncture during surgery and typically the (right/left) is the biggest.

The esophagus is located (dorsal/ventral) to the trachea.

True/False, the esophagus is composed of smooth muscle
True False

What does the small intestine look like?

This family of snakes has a cecum

The most cranial part of the cloaca that receives fecal waste

The middle part of the cloaca that receives reproductive secretions and urinary waste

The caudal part of the cloaca that acts as a reservoir

All three of these are found caudal to the liver

Some species might have a combined spleen and pancreas called the

Describe the rings of the trachea

Is the right lung bigger or smaller than the left lung

This part of the lung is involved in gas exchange

This part of the lung is only an air sac and is not involved in gas exchange

Where are the lungs attached?

What is different about the lungs in aquatic species of snakes?

Deoxygenated blood from the (left/right) part of the ventricle enters the ________ and ________.

Oxygenated blood from the (right/left) part of the ventricle will enter the ________ which will give rise to the left and right _______ ______.

The left and right systemic/aortic arches fuse to form the

These veins are located cranial to the heart and near the trachea

This vein is located ventral to the liver

This vein is located dorsal to the liver

The distal part of the kidney is called the _______ segment and contributes to ______ _____. What animal shares this characteristic?

Gas exchange in the cranial lung occurs in what specific location?

What kind of cells line the collecting duct?