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BIOL 2402 LECTURE FINAL EXAM –
SCHMIDT 2026 LATEST QUESTIONS
AND ANSWERS| ACE YOUR GRADES.
Which oocyte is associates with which follicle?
Primordial Follicle
-primary oocyte
Primary Follicle
-primary oocyte
Secondary Follicle
-primary oocyte
Mature (Grasfian) Follicle
-primary oocyte
-first polar body
-secondary oocyte
What is the role of estrogen during pregnancy?
-prepares the endometrium of the uterus for pregnancy
-thickens endometrial lining to prepare for implantation
-increased production of thin, watery cervical mucus to facilitate
sperm transport
-negative feedback inhibition of FSH secretion
What is the role of progesterone in pregnancy?
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Maintains lining of uterus
more acidic
forms mucus plug
Life cycle of the Corpus Luteum?
lives 12 days if egg is not fertilized
lives 7 weeks if egg is fertilized
after which it spontaneously regresses and is replaced by an
avascular scar named the corpus albicans.
Phases of fetal development?
blastulation - differentiation of blastocyst
gastrulation - blastocyst forms 3 germ layers
neurulation - development of neural tube (4 wks)
Fetal germ layers are?
Ectoderm - skin, nervous system
Mesoderm - Muscles, skeleton
Endoderm - digestive, respiratory lining, endocrine glands
What is estrogen?
A sex hormone, secreted in greater amounts by females than by
males. In nonhuman female mammals, estrogen levels peak
during ovulation, promoting sexual receptivity.
What is progesterone?
A hormone produced by the ovaries which acts with estrogen to
bring about the menstral cycle.
What is the hormone contributing to uterine contraction?
-this is an example of positive feedback in the human body
Oxytocin
Erection is controlled by?
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parasympathetic nervous system
Ejaculation is controlled by?
sympathetic nervous system
(each ejaculation produces 200-250 million sperm)
What is HCG (human chorionic gonadotropin)?
-pregnancy hormone
-stimulates the corpus luteum to produce estrogen &
progesterone
-this is what pregnancy tests detect in urine
What hormone signals the corpus luteum that the pregnancy
has begun?
HCG (human chorionic gonadotropin)
What does relaxin do?
Softens ligament letting joints widen which reduces the risk of
broken bones during labor and delivery
What is the endoderm layer?
the inner germ layer that develops into the lining of the digestive
and respiratory systems
What is the mesoderm layer?
middle germ layer; develops into muscles, and much of the
circulatory, reproductive, and excretory systems
What is the ectoderm layer?
outermost germ layer; produces sense organs, nerves, and outer
layer of skin
What is type 1 hypersensitivity?
BIOL 2402 LECTURE FINAL EXAM –
SCHMIDT 2026 LATEST QUESTIONS
AND ANSWERS| ACE YOUR GRADES.
Which oocyte is associates with which follicle?
Primordial Follicle
-primary oocyte
Primary Follicle
-primary oocyte
Secondary Follicle
-primary oocyte
Mature (Grasfian) Follicle
-primary oocyte
-first polar body
-secondary oocyte
What is the role of estrogen during pregnancy?
-prepares the endometrium of the uterus for pregnancy
-thickens endometrial lining to prepare for implantation
-increased production of thin, watery cervical mucus to facilitate
sperm transport
-negative feedback inhibition of FSH secretion
What is the role of progesterone in pregnancy?
, Page | 2
Maintains lining of uterus
more acidic
forms mucus plug
Life cycle of the Corpus Luteum?
lives 12 days if egg is not fertilized
lives 7 weeks if egg is fertilized
after which it spontaneously regresses and is replaced by an
avascular scar named the corpus albicans.
Phases of fetal development?
blastulation - differentiation of blastocyst
gastrulation - blastocyst forms 3 germ layers
neurulation - development of neural tube (4 wks)
Fetal germ layers are?
Ectoderm - skin, nervous system
Mesoderm - Muscles, skeleton
Endoderm - digestive, respiratory lining, endocrine glands
What is estrogen?
A sex hormone, secreted in greater amounts by females than by
males. In nonhuman female mammals, estrogen levels peak
during ovulation, promoting sexual receptivity.
What is progesterone?
A hormone produced by the ovaries which acts with estrogen to
bring about the menstral cycle.
What is the hormone contributing to uterine contraction?
-this is an example of positive feedback in the human body
Oxytocin
Erection is controlled by?
, Page | 3
parasympathetic nervous system
Ejaculation is controlled by?
sympathetic nervous system
(each ejaculation produces 200-250 million sperm)
What is HCG (human chorionic gonadotropin)?
-pregnancy hormone
-stimulates the corpus luteum to produce estrogen &
progesterone
-this is what pregnancy tests detect in urine
What hormone signals the corpus luteum that the pregnancy
has begun?
HCG (human chorionic gonadotropin)
What does relaxin do?
Softens ligament letting joints widen which reduces the risk of
broken bones during labor and delivery
What is the endoderm layer?
the inner germ layer that develops into the lining of the digestive
and respiratory systems
What is the mesoderm layer?
middle germ layer; develops into muscles, and much of the
circulatory, reproductive, and excretory systems
What is the ectoderm layer?
outermost germ layer; produces sense organs, nerves, and outer
layer of skin
What is type 1 hypersensitivity?
