LSR Flashcards
How many chromosomes to normal cells contain? How many chromosomes do sperm and egg cells contain? How do they join, and how many chromosomes does the fertilized egg have?
23 pair. 23. Meiosis. 23 pair.
What are the functions of the Testes, Epididymis, Sperm Duct, Urethra, Penis, Seminal Glands, Prostate, Scrotum.
Testes: To contain sperm. Epididymis: To help sperm mature. Sperm Duct: To send sperm to the urethra. Urethra: To take sperm and urine out of the body. Penis: Male sex organ. Seminal Glands: To make semen with the prostate. Prostate: To make semen with the seminal glands. Scrotum: To keep the testes hanging outside of the body.
What are the functions of the Ovaries, Oviduct, Uterus, Cervix, Vagina, Clitoris, and Urethra?
Ovaries: To make the eggs and help them mature. Oviduct: To send the egg to the uterus; where fertilization occurs. Uterus: To hold the fertilized egg. Cervix: Holds the baby in, and pushes the baby out during birth. Vagina: To let the menstrual flow out of the body. Clitoris: Main site of sexual arousal in females. Urethra: Where urine exits the body.
Does the nervous system use a kind of negative feedback like the reproductive? Which one is more important in maintaining homeostasis
After neurons send messages, they rest, so that they don’t overheat. The nervous system, because the body could die without homeostasis in the nervous system.
Fertilization usually occurs in the _____ and development of the baby takes place in the _____. Both are therefore inside the mother’s body.
Oviduct. Uterus.
In the male the _____ produce sperm. They hang below the man’s body in the _____. Being outside the body keeps the sperm at the right temperature, which is _____ than the rest of the body. The sperm-producing organs also produce a hormone called _____. During puberty it stimulates the development of _____ sex characteristics in males.
Testes. Scrotum. Testosterone. Secondary.
Sperm go from where they are produced into the _____. Here they _____ and are stored. They then travel up into the abdomen through a tube known as the _____ duct.
Epididymis. Mature. Sperm.
What the male and female primary and secondary sex characteristics? Which two are common between both males and females?
Primary: Males, Penis; Females, Vagina. Secondary: Males, Broadening of shoulders, developing of beards; Female, Developing of breasts, widening of hips; Both, changing of voice, hair over body.
What are the functions of the the male and female urethra, and the prostate and seminal vesicles?
Male Urethra: Take sperm and urine outside of the body. Female Urethra: Takes urine out of the body. Prostate and Seminal Vesicles: Produce sperm.
What are the definitions of: Wet Dream? Circumcision? Puberty? Adolescence?
Wet Dream: When semen exits the body, particularly at night. Circumcision: When the tip of the penis is cut off. Puberty: When physical attributes of maturity occur. Adolescence: When all of the attributed of maturity occur.
To enable intercourse to take place, the _____ of the female becomes moist, while in the male, the penis becomes _____. Stimulation of the nerve endings in the penis of the male and the _____ of the female bring about arousal and finally _____ in both the male and the female, and _____ in the male.
Vagina, Erect, Clitoris, Orgasms, Ejaculation.
What is masturbation? Who is it done by? It is considered normal? Can it be harmful?
Masturbation is contact with the penis or vagina, and in which the user feels pleasure. It is done by males and females. It is considered normal. No, it is not harmful.
Which system can humans live without?
Reproductive.
