Human Physiology Unit 5C:
Reproductive
Supplemental Instruction
Iowa State University
Leader:
Course:
Instructor:
Date:
Paige Stieneke
BIOL 256
Dr. Karri Haen
May 1, 2013
Male Accessory Glands
1. Which two organs contribute in the
production of semen?
2. _______ is (acidic, alkaline) fluid
that contains fructose, coagulating
enzyme and prostaglandins. It
protects and activates _______ and
helps aid them in movement.
3. What glands produce mucus that
neutralizes acidic urine in urethra?
Component
Fructose
Prostaglandins
Function
a.
b.
c.
Relaxin
Alkalinity
Clotting factors
Seminalplasmin
Male Sexual Response: Erection
1. Which nervous system stimulates the erection during sexual arousal?
2. What hormone acts as a blood vasodilator?
3. Corpus (spongiosum, cavernosa) keeps the urethra open during ejaculation, and corpus
(spongiosum, cavernosa) fill with blood during an erection.
Sustentacular and Leydig Cells
1. Which type of cells aid in spermatogenesis and form the blood-testis barrier?
2. Where are those cells found?
3. Which types of cells produce testosterone?
Supplemental Instruction
1060 Hixson-Lied Student Success Center  294-6624  www.si.iastate.edu
Brain-Testicular Axis
Location
Hormone
Hypothalamus
GnRH
Anterior Pituitary
Follicle Stimulating
Hormone
Leydig Cells
Sertoli Cells
Function
Stimulates _____________ to secrete testosterone
Stimulates sertoli cells to release
_____________________ to enhance spermatogenesis
Sperm development
Negative feedback mechanism for FSH
Female Reproductive System
1. _____________________: Period of follicle
growth; occurs at days ______.
a. Primordial follicle  Primary 
Secondary  Mature Graafian follicle
2. What process occurs midcycle?
a. What two hormones “spike” and signify
ovulation?
b. What happens to an egg during ovulation?
3. _________________: Period of corpus luteum
activity; occurs at days _______.
a. What is the primary hormone that stops
LH and FSH release?
b. Which cells enlarge to form the corpus
luteum?
c. Which two hormones are secreted by the
corpus luteum?
d. What is the function of these two
hormones?
e. If a pregnancy occurs, which two
hormones are secreted to maintain the
endometrium?
f.
If there is no pregnancy, what process
occurs?
Supplemental Instruction
1060 Hixson-Lied Student Success Center  294-6624  www.si.iastate.edu