Organ Systems and Terminology

Insert the photo from Activity 1, step 8. The circle and “X” marking the cranial and caudal ends of the specimen should be visible in the photo. If they are not, add labels to the photo.

1. In Activity 1, which layer of the cucumber was the most superficial: the skin, the flesh, or the seeds and pulp? Which layer was the deepest? (Note: If you used a banana, the only layers would be the skin and the flesh. Commercially available bananas do not have seeds.)

2. In Activity 1, step 9, you created a series of cross-sections. Were they all identical with one another? Explain your answer.

Activity 2

Photo 1

Insert the photo from Activity 2 showing a ventral view of the rat. Label the photo “female” or “male” depending on the sex of the specimen. The following should be indicated in this photo:

· Naris

· Incisor

· Vibrissa

· Manus

· Pes

· Anus (if visible—in a male, it may be obscured by the scrotum)

· If female:

· Teat

· Vaginal orifice

· Urethral orifice

· If male:

· Scrotum

· Prepuce

· Urogenital opening

Activity 3

Photo 1

Insert the photo(s) from Activity 3 showing the ventral body cavity of the rat. The following structures should be indicated:

· Trachea

· Esophagus

· Thymus

· Heart

· Lung

· Diaphragm

· Liver

· Stomach

· Spleen

· Small intestine

· Large intestine

· Kidney

· Ureter

· Urinary bladder

· If female:

· Uterine horn

· Ovary

· If male:

· Testis

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