1. Muzzle: The muzzle of a bat is the forwardmost extension of the skull. It is usually hairless and covered in sensory bristles.
2. Nostril: The nostrils are located on the muzzle and are used for breathing.
3. Chin: The chin is the lowermost part of the muzzle.
4. Philtrum: The philtrum is a vertical groove that runs from the nose to the upper lip.
5. Upper lip: The upper lip forms the boundary of the mouth.
6. Lower lip: The lower lip forms the other boundary of the mouth.
7. Commissure: The commissure is the corner of the mouth.
8. Teeth: Bats have different types of teeth, including incisors, canines, premolars, and molars. The teeth are used for catching, killing, and eating insects.
9. Tongue: The tongue is used for licking and catching insects.
10. Roof of the mouth: The roof of the mouth is lined with taste buds.
11. Floor of the mouth: The floor of the mouth contains salivary glands.
12. Palate: The palate separates the oral cavity from the nasal cavity.
13. Uvula: The uvula is a small, fleshy projection that hangs from the roof of the mouth.
14. Mandible: The mandible is the lower jaw.
15. Ear: Bats have large, sensitive ears that are used for echolocation.
16. Pinna: The pinna is the external part of the ear.
17. Tragus: The tragus is a small, cartilaginous flap that projects from the front of the pinna.
18. Antitragus: The antitragus is a small, cartilaginous projection that projects from the back of the pinna.
19. Lobule: The lobule is the soft, fleshy part of the earlobe.
20. Wing: Bats have two wings that are formed by a thin, elastic membrane called the patagium. The wingspan is the distance between the tips of the wings.
21. Forearm: The forearm is the part of the wing that connects the wrist to the elbow.
22. Humerus: The humerus is the upper arm bone.
23. Radius: The radius is the shorter of the two bones in the forearm.
24. Ulna: The ulna is the longer of the two bones in the forearm.
25. Carpus: The carpus is the wrist joint.
26. Metacarpals: The metacarpals are the long bones of the hand.
27. Phalanges: The phalanges are the small bones of the fingers.
28. Thumb: The thumb is the innermost digit of the hand.
29. Index finger: The index finger is the second digit of the hand.
30. Middle finger: The middle finger is the third digit of the hand.
31. Ring finger: The ring finger is the fourth digit of the hand.
32. Little finger: The little finger is the outermost digit of the hand.
33. Calcaneus: The calcaneus is the heel bone.
34. Tarsus: The tarsus is the ankle joint.
35. Metatarsals: The metatarsals are the long bones of the foot.
36. Phalanges: The phalanges are the small bones of the toes.
37. Hallux: The hallux is the innermost digit of the foot.
38. Great toe: The great toe is the second digit of the foot.
39. Second toe: The second toe is the third digit of the foot.
40. Third toe: The third toe is the fourth digit of the foot.
41. Fourth toe: The fourth toe is the outermost digit of the foot.
42. Tail: Some bats have a tail, which is usually made up of vertebrae.