LAB 7 NOTEBOOK
Experiment 7 – Reproductive System
Human Anatomy and Physiology II
Portage Learning, Geneva College
, NOTEBOOK ENTRY FOR:
Experiment 7 – Reproductive System
TITLE: Reproductive System
NOTES:
The human reproductive system is defined as a sexual reproductive system:
● There are two parents or a biparental system meaning offspring
receives genes from two parents
● Parents produce gametes (sex cells) that meet together to form
fertilized egg or zygote. Gametes must have two properties: mobility
and ability to provide nutrients. One cell cannot provide one; both need
to provide. One cannot because then it would be too heavy and unable
to move.
Sperm is the male sex cell; smallest in the body; very motile= consists of
DNA and mitochondria in tail
Egg: (female) large and heavy nutrient; largest human cell; can be seen with
naked eye in some cases
Primary and sex organs
● Primary sex organs gonads (testes and ovaries)
● Secondary sex organs: ducts and glands, penis allows for storage of
sperm; uterus, uterine tube, vagina allows for storing of egg; zygote to
fertilize into a fetus baby grows.
Male reproductive system
Scrotum: a pouch; arises from stomach contains Testes (endocrine and
exocrine gland); produce sex cells and hormones (testosterone). Endo
releases hormones directly into blood stream.
Cells are designed to produce sperm (seminiferous tubules); spermatogenic
cells.
Interstitial cells found between seminiferous tubules produce testosterone
(steroid) allows for male reproductive system, secondary sex characteristics
Testes develop first in the abdomen inside the abdominal cavity and descend
into scrotal sac by the inguinal canal.
Cryptorchidism: condition where testes do not fully descend. Can be
corrected surgically if not can lead to infertility or testicular cancer.
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