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Reproduction & Development
A&P II - Del Mar College
72
Physiology
Undergraduate 2
04/19/2009

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Term
Produces egg cells (ova) and female sex hormones - estrogens and progesterone.
Definition
Ovary
Term
Site of fertiization, transports egg to uterus
Definition
Uterine (Fallopian)Tube
Term
Protects and sustains life of developing embryo/fetus.
Definition
Uterus
Term
Passageway for elimination of menstrual fluids, receives penis, transports fetus.
Definition
Vagina
Term
Folds that enclose urethral and vaginal orifices.
Definition
Labia
Term
Erectile tissue in the female with sensory nerve supply.
Definition
Clitoris
Term
Secretes Lubricant in the female
Definition
Greater Vestibular (Bartholin's glands)
Term
Production of ova in female; 1 mature ovum/28 days. Begins at puberty under influence of GnRH and FSH. At birth the ovaries contain about 2 million primordial follicles. The # is lower, about 400,000 by puberty.
Definition
Oogenesis
Term
Phase of development during which an individual becomes reproductively functional; onset is due to hormonal activity.
Definition
Puberty
Term
Male Reproductive Organs
Definition
Testes
Term
Site of sperm production
Definition
Seminiferous Tubules
Term
Produces Testosterone
Definition
Interstitial Cells
Term
Sperm storage and maturation site.
Definition
Epididymis
Term
Conveys sperm to ejaculatory duct.
Definition
Ductus (vas) deferens
Term
Secretes seminal fluid
Definition
Seminal Vesicle
Term
Secretes Prostatic fluid
Definition
Prostate Gland
Term
Secretes lubricant in the male.
Definition
Bulbourethra Gland
Term
Protects testes; allows for slightly lower temperature required for normal sperm production.
Definition
Scrotum
Term
Conveys urine and seminal fluid with sperm: has 3 cylindrical masses of erectile tissue with blood sinuses.
Definition
Penis
Term
Erectile tissue in the male with sensory nerve supply.
Definition
Glans Penis
Term
Production of gametes (sperm or ova); involves both mitosis and meiosis.
Definition
Gametogenesis
Term
Production of sperm: ~300 million/day. Begins at puberty within the seminiferous tubules. Complete development and maturation takes from 72 - 74 days (~9 weeks).
Definition
Spermatogenesis
Term
What process does FSH stimulate in the male and where does this process occur?
Definition
Spermatogenesis occurs in the Seminiferous Tubules
Term
What cells produce testosterone in the male and where are they found?
Definition
Interstitial Cells found in the testis.
Term
What are the functions of the testes?
Definition
Production of sperm and testosterone
Term
How does termperature affect sperm production in the male?
Definition
At body temperature sterility results; at a slightly "cooler" temperature than normal body temperature, normal spermatogenesis occurs.
Term
Where are sperm stored?
Definition
In the Epididymis
Term
Within what structure does sperm pass upward from the testes through the body wall?
Definition
Ductus (vas) deferens
Term
What is the name of the cycle where hormones produced in the ovary causes menstrutation cycle to start?
Definition
Ovarian Cycle
Term
Graafian follicle is released and becomes the ________ __________ after ovulation and it produces which hormone?
Definition
Corpus Luteum produces Progesterone. If egg is not fertilized, the Corpus Luteum will shed itself through menstration. Oh No - Vacation AGAIN! LOL
Term
What is the name of the condition when the testes fail to drop down into the scrotum (out of the body)?
Definition
Cryptorchidism
(Remember that from Medical Terminology?) If the testes stays in the body, the male becomes sterile and is suseptable to cancer.
Term
All somatic cells of the human body contain _____ pairs of chromosomes.
Definition
23 (pairs)
Term
One member of each pair of homologus chromosomes was contributed by a ______ and the other by the ______.
Definition
Sperm; Ovum
Term
The "Genotype" of an individual refers to:
Definition
The genes present in the cells of the individual.
Term
An Allele (contrasting gene):
Definition
is a different form of a gene for the same characteristic.
Term
Phenotype
Definition
The physical appearance of an individual; caused by gene combo that expresses it.
Term
What are Monozygotic twins?
Definition
(Identical). A single oocyte fertilized by a single sperm. Cell mass divides during early cleavage.
Term
Whar are Dizygotic twins?
Definition
(Fraternal) 2 oocytes fertilized by 2 separate sperm
Term
Sex Chromosomes - 1 Pair determine gender. Define XY and XX
Definition
X Y = Male
X X = Female
Term
Amphimixis
Definition
The "Moment of Conception"
Term
Zygote
Definition
Single cell; result of fusion of sperm and egg nuclei (after fertilization).
Term
Cleavage
Definition
Serioes of mitotic divisions
Term
Morula
Definition
Solid mass of cells, begins with cleavage; moves through uterine tube in this form.
Term
Blastocyst
Definition
Hollow ball of cells, with "Inner Cell Mass", enters uterine cavity in this form.
Term
Implantation
Definition
attachment of blastocyst to endometrial lining. ~ 5-7 days after fertilization.
Term
Trophoblast
Definition
"Blastodisc formation" - inner cell mass separates from "Trophoblast" and forms "amniotic cavity." Cell mass contains 2 layers: a superficial layer (epiblast) and a deep layer (hypoblast).
Term
Penetration of secondary oocyte by sperm cell, results in fusion of nuclei; usually occurs in the upper 1/3 of the uterine (fallopian) tube.
Definition
Fertilization
Term
Which structure produces enzymes that digest endometrial tissue during implanatation?
Definition
Syncitial Trophoblast
Term
Whar are the 4 fetal membranes?
Definition
Chorion; Amnion; Yolk Sac; Allantois
Term
Forms fetal portion of placenta
Definition
Chorion
Term
Forms "water bag"; derived from ectoderm, accumulates amniotic fluid, and has a protective function.
Definition
Amnion
Term
Incorporated within embryonic body structure, forms lining of repiratory system, digestive system and ducts.
Definition
Yolk Sac
Term
Forms lining of bladder, and lining of umbilical vessels.
Definition
Allantois
Term
What does the embryonic structure "Notochord" become?
Definition
Vertebral Column
Term
What does the embryonic structure "neural tube" become?
Definition
Spinal Cord
Term
What does the embryonic structure "optic cup" become?
Definition
Retina
Term
How many major "veins" occur within the umbilical cord?
Definition
1
Term
How many major "arteries" occur within the umbilical cord?
Definition
2
Term
Which vessels within the umbilical cord transport "oxygenated" blood?
Definition
Umbilical Vein
Term
Which vessels within the umbilical cord transport "deoxygenated" blood?
Definition
Umbilical Arteries
Term
Begins at fertilization and ends with birth ~9 months; general development events are grouped into "Trimesters".
Definition
Prenatal Development (Gestation)
Term
Occurs as cells deivide and move between the epiblast and hypoblast along a central region of the blastodisc knowns as the "primitive streak".
Definition
Process known as "Gastrulation" and "Germ Layer Formation".
Term
Cell layers of the Embryonic disc form "Germ Layers" from which all body tissues are derived. Name the 3 layers.
Definition
Superficial layer - Ectoderm
middle "3rd" cell layer - Mesoderm
deep layer - Endoderm
Term
The Superficial Germ Layer "Ectoderm" forms:
Definition
Nervous System and Sensory Receptors.
Epidermis and glands of the skin, hair finger and toenails. Optic cup - retina and lens of eye. Olfactory pit - Olfactory nerve. Otic Vescicle - Membranous labyrinth. Lining of oral and nasal cavities and external auditory canal.
Term
The middle "3rd" Germ Layer, the "Mesoderm" forms:
Definition
Peritoneum; muscle, bone, cartilage and connective tissues, heart tissue, dermis of skin, bone marrow, blood cells and blood vessels.
Term
The Deep Germ Layer - "Endoderm" forms:
Definition
Lining of GI and respiratory tubes (except oral and anal canals), ducts of some digestive organs, bladder and assorted endocrine tissues.
Term
Fetal and maternal blood DO NOT mix; gas nutrient and waste exchange primarily occur by __________.
Definition
Diffusion
Term
Production of ova in female: 1 mature ovum/28 days. Begins at puberty under the influence of GnRH and FSH. At birth the ovaries contain about 2 million primoidal follicles. The number is reduced to about 400,000 by puberty.
Definition
Oogenesis
Term
Changes of endometrial lining due to maturation cycle of ovum; duration ~28 days.
Definition
Menstrual Cycle
Term
Menstrual Cycle: General Sequence of Events:
Definition
Days 1-5 Menstrual (menses) phase - stratum functionalis removed.
Days 6-13 Preovulatory (postmenstrual) phase - stratum basalis activated by estrogen to produce new stratum functionalis.
Day 14 - Ovulation - rupture of follicel with release of ovum (secondary oocyte).
Days 15-28 Postovulatory (premenstrual) phase - stratum functionalis continues growth & maintenance due to Progesterone secretions from Corpus Luteum. With no fertilization - Corpus Luteum degenerates; GnRH release begins again.
Term
With fertilaztion ______ ________ is secreted by the developing chorion; maintains the corpus luteum and prevents further follicle development by inhibiting FSH and LH.
Definition
Chorionic Gonadotropin (hCG)
Term
When testing for pregnancy, which glycoprotein hormone is being checked for the presence of?
Definition
Chorionic Gonadotropin (hCG)
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