Hormones
What is homeostasis?
A stable internal environment despite changes in the external environment
What is a gland?
An organ or group of cells that produces and releases substances
How many phases are in the menstrual cycle?
three-menstrual, proliferative, secretory
What does the nervous system do?
Allows organisms to detect, process and respond to information from their environment
What do nerves do?
Relay signals throughout the body
What is a hormone?
A chemical messenger produced by endocrine glands that is released into the bloodstream, travels to target cells and produces a specific response
What are the two parts of the pituitary gland?
Anterior pituitary and posterior pituitary
What does follicular cells produce?
estrogen
What does progesterone do?
Prepares and maintains the uterus for implantation and the growth of an embryo
What does the cell body contain?
Nucleus and organelles
What are the 2 main categories of hormones?
Protein hormones, steroid hormones
What is the hypothalamus?
What does the corpus luteum produce?
Where does fertilization take place?
the oviducts which is the narrowest part of the fallopian tubes
What do dendrites do?
receive incoming signals
What do hormones do?
coordinate and regulate growth and metabolism, reproduction, water balance and responses to stress
What do the parathyroid glands do?
Produces hormones that control metabolism, regulates heart rate and body temperature, supports normal growth and brain development
What does LH (luteinizing hormone) do?
stimulates the release of an egg
What does FSH (follicle stimulating hormone) do?
causes the egg to mature in the ovary
What does the somatic nervous system do?
What is the difference between protein and steroid hormones?
Protein hormones are made of amino acids, hydrophilic, bind to surface receptors and can't pass through cell membranes. Steroid hormones are from cholesterol, pass easily through cell membranes and bind to internal receptors
What hormones does the anterior pituitary produce?
prolactin, growth hormone, thyroid stimulating hormone, ACTH, follicle stimulating hormone, luteinizing hormone
What controls the ovarian cycle?
hypothalamus, pituitary glands, ovaries
What is the difference between the central nervous system and the peripheral nervous system?
Central is the brain and spinal cord, it integrates and processes information. Peripheral is all nerves aside the cns, connects the cns to the body
What is depolorization?
A stimulus causes Na channels to open, Na rushes into the neuron and the inside becomes less negative