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A & P
ch 11 reproductive system
| Question | Answer |
|---|---|
| A mature human cell contains how many pairs of chromosomes | 23 |
| A mature human cell contains how many chromosomes | 46 |
| Genetic material is carried on _________ in the nucleus of each cell | chromosomes |
| chromosomes are contained in bundles of dna and protein called | Chromatin |
| the total number of chromosomes in a cell is the _________ number | diploid |
| Each sex cell is known as a | Gamete |
| The number of chromosomes in each sex cell is known as the _______ number | haploid |
| The union of the haploid sperm and haploid egg results in the formation of a | zygote |
| The female reproductive organs are the | ovaries |
| the ovaries are held in place by 2 ligaments and a fold of the peritoneum. Name them | Suspensory and ovarian ligament and the mesovarium |
| The precursor to a mature egg is | oocytes |
| An oocyte undergoes a maturation process resulting in a mature egg. this process is called | oogenesis |
| what hormones stimulate an oocyte to undergo meiosis | follicle-stimulating hormone FSH and luteinizing hormone LH |
| What do you call the process that takes place in the testes resulting in the production of a haploid sperm | spermatogenesis |
| Each fallopian tube opens directly into the peritoneal cavity in an expanded area called the | infundibulum |
| The narrow opening from the uterus to the vagina is the | cervix |
| the _______ begins at the tip of the cervix and continues into the vagina | cervical canal |
| What is the top segment of the uterus called | the fundus |
| Name the three ligaments that hold the uterus in place | broad,round,and uterosacral ligament |
| Name the three layers of the uterine wall. Starting with the outside,middle and innermost layer | perimetrium, myometrium,endometrium |
| a developed ovum is called | graafian follicle |
| a fertilized egg is called an | embryo |
| The time of the first menstral cycle for a girl is called | menarche |
| the process of fetal development is called | gestation |
| gestation is stimulated by what hormone | human chronic gonadotropin HCG |
| what is the area between the urethral opening and the anus called | the perineum |
| the anterior _____ _______ contains the external genitalia. | urogenital triangle |
| the posterior ____ ______ contains the anal opening | anal triangle |
| what is the female external genitalia referred to as | vulva or pudendum |
| The area anteriorly over the pubic symphysis is known as | mons pubis |
| In a women milk is stored in the | lactiferous sinuses |
| What do you call the pouch of skin and muscle that contains the testes | scrotum |
| what muscle contracts during cold weather to cause the skin of the scrotum to shrink and become firm and wrinkled | dartos muscle |
| what muscle is responsible for pulling the testes closer to the body | cremaster muscle |
| What are sperm cells called | Spermatozoa |
| Where are sperm cells produced | seminiferous tubules |
| approximatly how many days does it take to produce mature haploid sperm | 64 |
| spermatozoa leave the testes through what | efferent ductile |
| The prostate gland is a male ____ _____ | sex gland |
| All major organ systems begin to develop during the ______ period. weeks __ to __ | embryonic weeks 3-8 |
| during weeks 25-27 the lungs become capable of respiration and produce____ | surfactant |
| A liquid protein substance that coats the alveoli of the lungs. | surfactant |
| Genetics is the study of | heredity |
| the transmission of characteristics from parents to their offspring is | heredity |
| What are the fundamental units of heredity | genes |
| What complex chemicals are contained in the chromosomes | Nucleic acids |
| _______ carry genes that code for numerous body proteins independent of sex | Autosomes |
| ____ _____ code for proteins that determine sex as well as for other proteins | Sex chromosomes |
| An XX chromosome code will code for what sex | Female |
| An XY chromosome code will code for what sex | Male |
| Each single gene contributed by one parent for any particular characteristic is called an | Allele |
| The genetic composition for a given trait is known as | Genotype |
| the observable characteristics of an organism that result from genetic composition and environmental factors | Phenotype |
| An organism that has two identical alleles for a trait, such as rr or RR is identified as being ________ for that trait | homozygous |
| An organism that has two different alleles for a trait, such as Rr is identified as being ________ for that trait | heterozygous |
| An inherited disease caused by the combined actions of two or more genes is called a _____ disease | polygenic |
Created by:
klindley