Hormones and glands

What is a hormone?

• the same as a neurotransmitter

• a substance secreted by cells that regulates cellular activities

• a protein that binds to specific molecule

• modified fatty acids that are secreted by cells

___ are chemical messengers of the nervous system and __ work in the endocrine system.

• hormones, neurotransmitters

• neurotransmitters, hormones

• target cells, receptor proteins

• endocrine glands, exocrine glands

A(n) ___ is a ductless gland that secretes hormones into the bloodstream or in fluid around the cells.

• exocrine gland

• pineal gland

• endocrine gland

• hypothalamus

A(n) hormone can go through a lipid cell membrane because it is composed of lipids.

• amino-acid based

• second messenger

• water soluble

• steroid

Specific cells to which a hormone travels to produce an effect is

• neuropeptides

• receptor cells

• target cells

• prostaglandins

Examples of exocrine glands are

• salivary glands

• the pancreas

• sweat glands

• all of the above

The two types of hormones are

• male and female

• steroid and amino acid

• protein and target hormones

• receptor and messenger hormones

Which of the following is a function of a hormone?

• controls mood and behavior

• controls kidney function

• aids in taking up glucose from the bloodstream

• all of the above are functions of hormones

The hormone calcitonin regulates

• calcium in the bloodstream

• calcium in the bones

• nervous system reaction time

• muscle contractions

The hormone LH

• stimulates egg release (ovulation) and estrogen production

• regulates the menstrual cycle

• regulates uterine contractions during labor

• controls sugar in the blood