The following points highlight the seven main ligaments and muscles in a snake. 1. The poison gland is held in position by ligaments, which extend from maxillolacrimal junction to pterygoquadrate. 2. Fan-shaped ligaments present along the sides of the poison gland. 3. Associated muscles are anterior and posterior temporalis (masseter), digastric muscles and protractor- pterygoid muscle (Fig. 8.32B) that help [...]
The upcoming discussion will update you about the difference between lacertilia and ophidia. Difference # Lacertilia: 1. Shape: Elongated body, usually with two pairs of limbs. 2. Neck: Distinct 3. Limbs: Excepting the limbless lizards, the limbs are pentedactylus, each digit ending in a claw 4. Eyelids: Usually an upper and a lower eyelid are present. In the members of [...]
Let us learn about the comparison between limbless lizards and snakes. Comparison # Limbless Lizards: 1. Limbs: Absent but vestige of girdles are present. 2. Shape of body: Cylindrical. 3. Tail: Long 4. Eyelid: Movable eyelids are present. 5. External ear opening: External ear opening is present 6. Tongue: A short, flat tongue is present. 7. Scales: Ring –link overlapping [...]