![External anatomy of head and pharynx of adult lamprey.](https://s3-us-west-2.amazonaws.com/courses-images/wp-content/uploads/sites/3442/2020/01/25215130/Slide31.jpg)
External anatomy of head and pharynx of adult lamprey. CC-BY Skylar Jackson.
![Transverse sections of the head (a), pharynx (b), and trunk (c) regions of the lamprey.](https://s3-us-west-2.amazonaws.com/courses-images/wp-content/uploads/sites/3442/2020/01/25215136/Slide41.jpg)
Transverse sections of the head (a), pharynx (b), and trunk (c) regions of the lamprey. CC-BY Skylar Jackson.
![Midsagittal section of lamprey.](https://s3-us-west-2.amazonaws.com/courses-images/wp-content/uploads/sites/3442/2020/01/25215140/Slide51.jpg)
Midsagittal section of lamprey. CC-BY Skylar Jackson.
External anatomy of head and pharynx of adult lamprey. CC-BY Skylar Jackson.
Transverse sections of the head (a), pharynx (b), and trunk (c) regions of the lamprey. CC-BY Skylar Jackson.
Midsagittal section of lamprey. CC-BY Skylar Jackson.