External Anatomy (Define) Flashcards
1
Q
Snout
A
- Similar to the mouth
2
Q
External Naris
A
- Similar to nostrils
- Allows the frog to breathe
3
Q
Browspot
A
- Also called the third eye
- A mark left behind after skull is fully developed
- A rounded, vestigial organ (no useful functions)
4
Q
Tympanic Membrane
A
- Similar to eardrums
- Allows the frog to hear using sound waves
- Allows the frog to hear both in the air and below water
- Located behind the eyes
5
Q
Nictitating Membrane
A
- Similar to goggles when swimming
- Helps protect and cleanse the frog’s eyes when underwater
- Semi-transparent lid that covers the eye completely
- Helps the frog see underwater and hide from predators
- Moistens the eyes when on land
- Also called the third eyelid
6
Q
Upper Eyelid
A
- A slightly movable thin muscular membrane that protects, moistens, and cleanses the eye
- Transparent to opaque
7
Q
Lower Eyelid
A
- An immovable muscular membrane thinner than the upper eyelid
- Transparent to opaque
8
Q
Digits of the Fingers
A
- Similar to fingers
- Helps the frog move around and jump
9
Q
Carpus
A
- Bones forming the wrist
10
Q
Forearm
A
- Similar to upper arm
- Raises and supports the frog when at rest
11
Q
Median Dorsal Line
A
- A line across the middle of the frog’s dorsal side
- A reference point that divides the frog’s body symmetrically
12
Q
Thigh
A
- The upper leg of the frog
- Has strong muscles for jumping and swimming
13
Q
Shank
A
- The lower leg of the frog
- Has strong muscles for jumping and swimming
14
Q
Anus
A
- Posterior opening where feces, urine, eggs, and sperm are excreted
- Also called cloaca, cloacal opening, or vent
15
Q
Tarsus
A
- The long ankle of the frog
- Strengthens the frog’s leaps and strides
