Which structures in human female are equivalent to the following structures in the male ?
(a) testes (b) vas deferens (c) penis
In each case say in what respect the structures are equivalent?

Answer

To answer the question regarding the equivalent structures in the human female for the specified male structures, we can break it down step by step:

### Step-by-Step Solution:

1. **Identifying the Equivalent Structure for Testes:**
- The testes in males are responsible for the production of sperm and hormones such as testosterone.
- The equivalent structure in females is the **ovaries**.
- **Reason:** Ovaries produce eggs (ova) and hormones like estrogen and progesterone, similar to how testes produce sperm and testosterone.

2. **Identifying the Equivalent Structure for Vas Deferens:**
- The vas deferens in males is a duct that transports sperm from the testes to the urethra.
- The equivalent structure in females is the **fallopian tubes** (also known as oviducts).
- **Reason:** Fallopian tubes carry the eggs from the ovaries to the uterus, similar to how the vas deferens carries sperm.

3. **Identifying the Equivalent Structure for Penis:**
- The penis in males is the organ used for copulation and the delivery of sperm.
- The equivalent structure in females is the **vagina**.
- **Reason:** The vagina serves as the canal for copulation and the birth canal, similar to the function of the penis in mating.

### Summary of Equivalents:
- (a) Testes → Ovaries
- (b) Vas Deferens → Fallopian Tubes
- (c) Penis → Vagina