TechV- Serpentines (A&P).txt
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snakes have simple, ___ curved teeth
what is the normal # of rows a teeth a snake has? (not counting fangs)
- four rows on top
- two tows on bottom
only ___ snakes have fangs
the two halves of the mandible are held together by a ___ hinge
___ bone is elongated and mobile
allows them to "gape"
snakes have 3 methods of killing
- swallowing hole
snakes have ___ different salivary organs
when snakes lose a tooth, it ___ grow back
what organ gives snakes the vomeronasal sense?
what 2 things does the jacobsons organ play a major role in?
snakes have ____ on the forked tongue, and they carry the scent to the ___ organ and they are transferred to the olfactory bulb
what are the 6 methods of movement a snake can use?
- lateral undulation
- slide pushing
- rectilinear motion
what is the most common method of movement?
what is it aka?
- lat. undulation
- serpentine undulation
what 3 things are combined to create lat. undulation?
- contraction of muscles
- weight distribution
which method of movement is a scrunching and straightening motion?
which method of movement requires little energy and is used in sand and mud
which method of movement requires a large amount of energy and is aka jumping and striking
which method of movement a caterpillar movement- the skin pulls the snake, they move in a straight line like this.
snakes have a ___ chambered heart
their heart can ___ so that it can still work efficiently for when they are eating large prey
a terrestrial snakes heart is located ___ ___ ___ ___
closer to their head
an aquatic snakes heart is located ___ ___ ___
in their middle
the RPS means that we should use their ___ half to give injections
which lung is the functional one?
what movement produces respiration
snakes have a tendency to take ___ to ___ to exhale because they can handle higher levels of CO2
seconds to minutes
their eyelids are ___ to form the spectacle
what is the anterior spectacle called that is shed during ecdysis?
the iris contains ___ muscle allowing them to ___
snakes have a wide range of ___
the digestive system is a ___ tract
their saliva contains more ____ ____ than a mammals so the digestion starts in the mouth
a venom gland is a modified ____ gland
the anus leads to the dorsal part of the cloaca called the ___
digestion requires a ____ amount of energy
their digestive system has been known to ___ ___ when not in use, especially in the large snakes that dont need to eat as often
they have ___ kidneys
which kidney is more cranial to the other?
right is more cranial
ureters empty into the __ in the cloaca
snakes dont have a ___ just like birds
what is a snakes primary nitrogenous waste?
fertilization is ___ and can be ___
males have 2 ___ testicles and a pair of ____ that are ___
to sex a snake, they are ___ ___, if the probe goes further this means you are in the ____ of a ____
- cloacally probed
snakes dont have a ___ making their eggs soft and leathery
70% of snakes are oviparous, this includes the ___ and ___ snakes
this also means they are born with an ___ ___
what are the 3 snakes that are ovoviviparous?
snakes dont have a ____ membrane, but scales that serve the same fx
snakes dont have an outer ___
what 2 species have a pit for sensing body heat?
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