Important Definitions
What are hormones?
Substances secreted by endocrine glands.
Which gland plays an important role in sleep patterns?
TRUE OR FALSE:
All hormones are inorganic substances.
FALSE
TRUE OR FALSE:
Follicle-stimulating hormone (FSH) affects hair growth.
FALSE
TRUE OR FALSE:
Exocrine glands secrete hormones.
FALSE; Only endocrine glands secrete hormones
What are exocrine glands?
Which gland sits on top of the kidneys like a hat?
Adrenal glands
What do tropic hormones do?
Stimulate other glands to release hormones.
Which hormone has peak levels during puberty?
Growth hormone
What is up-regulation?
The process of target cells increasing the number of receptors when there is a prolonged decreased level of hormones; casting more lines into the pond when there is a small amount of fish
Anterior and posterior
How does growth hormone affect body cells?
Growth hormone causes body cells to increase in size and undergo more rapid cell division.
What hormone stimulates the production of milk?
Do steroid hormones or non-steroid hormones need assistance crossing cell membranes?
Non-steroid hormones because steroid hormones are lipid-soluble.
What are paracrine secretions?
Secretions that affect neighboring cells.
Iodine is important for which gland?
Thyroid
Most hormones in our body are steroid or steroid-like hormones.
FALSE; most hormones in the body are nonsteriod hormones
Which hormone maintains stable blood glucose levels between meals?
Cortisol
Can stress be beneficial?
Yes because it can warn us of potential danger (like a loud noise).
What are stressors?
A factor (physical or psychological) that is capable of stimulating a sympathetic "fight or flight" response.
Which gland also plays a role in the digestive system?
Pancreas
Which hormone has no function in males?
Oxytocin
This hormone causes smooth muscle contraction in lining of uterus (childbirth) and helps milk move from glands to ducts for nursing.
Which hormone is not produced until puberty?
Follicle-stimulating hormone
Name one "Fight or flight" response symptom.
Increased blood glucose
Increased blood glycerol and fatty acids
Increased heart rate
Raised blood pressure
Increased breathing rate
Dilated air passages
Dilated pupils
Redistributed blood flow