The Endocrine System
What is the function of the endocrine system?
To produce chemicals that control daily activities and long-term changes through hormones
What is fertilization?
Joining of an egg and a sperm
Where are a female's eggs produced?
In the ovaries
Through which membrane do nutrients pass from the mother to the developing embryo?
Placenta
Where are egg cells produced?
Ovaries
What are the chemicals produced by the glands of the endocrine system?
Hormones
What is the structure that is formed when fertilization occurs?
zygote
Where in the female's body does fertilization usually take place?
Fallopian tubes (oviducts)
What is the main event that happens during puberty?
Body becomes able to reproduce
The thyroid and pituitary are part of which body system?
Endocrine system
The way the endocrine maintains ____________________ is often compared to a heating system that turns a furnace on and off to control a room's temperature.
homostasis
Where in the body are sperm produced?
testes
After it leaves the fallopian tube, where does a fertilized egg go to develop into a baby?
The uterus
During which stage of childbirth do strong muscle contractions of the uterus cause the cervix to enlarge?
Labor
The way that the endocrine system stops the release of a hormone when it reaches a certain level is an example of _______________________ ________________________.
Negative feedback
Which endocrine glands links the endocrine system to the nervous system?
The hypothalamus
What hormone is responsible for the development of male characteristics?
testosterone
During what process is a mature egg released from the ovary?
Ovulation
During which stage of development do children become adults physically and mentally?
Adolescence
True or False: The placenta can protect an embryo from alcohol and other harmful substances that might be present in the mother's blood.
FALSE
Which endocrine gland communicates with the hypothalamus to control many body activities?
Pituitary gland
Where in the male is testosterone produced?
testes
What 2 major events occur during the menstrual cycle?
An egg develops in an ovary The uterus prepares for the arrival of a fertilized egg
During which stage of childbirth is the baby pushed out of the mother's body?
Delivery
Why do hormones cause changes only in specific body organs?
Hormone interacts only with target cells.