Chapter 16: Endocrine System – Practice Questions & Exam Review Complete Verified Questions with A+ Graded Answers Latest Updated 2026

Chapter 16: Endocrine System – Practice Questions &
Exam Review Complete Verified Questions with A+
Graded Answers Latest Updated 2026
The hormone in this figure is most likely a __________ hormone.

- peptide
- hydrophilic
- steroid
- amine

steroid

This figure depicts __________.

- a releasing hormone stimulating hormone secretion
- an inhibiting hormone stimulating hormone secretion
- a neural stimulus stimulating hormone secretion
- a humoral stimulus stimulating hormone secretion

a humoral stimulus stimulating hormone secretion

What often serves as the second messenger when a hydrophilic amino-acid based hormone
binds its receptor?

- adenylate cyclase
- cAMP
- protein kinase
- G-protein

cAMP

Increasing levels of blood glucose stimulate the release of insulin. This type of stimulation is
known as:

- humoral stimulation.
- hormonal stimulation.
- positive stimulation.
- neural stimulation.

, humoral stimulation.

Endocrine cells that increase hormone secretion in response to other hormones are controlled
by:

- neural stimuli.
- humoral stimuli.
- hormonal stimuli.
- positive stimuli.

hormonal stimuli.

True or False: Hormones only affect certain types of cells known as target cells.

True

Cancer cells secrete signaling chemicals such as growth factors and interleukins that promote
cancer cell growth and survival. This is an example of __________.

- endocrine signaling
- autocrine signaling
- paracrine signaling
- neural signaling

autocrine signaling

Compared to the effects of the nervous system, the effects of the endocrine system
__________.

- do not have an effect on homeostasis
- last longer
- are faster
- are mediated by neurotransmitters

last longer

Chemical messengers that reach their target cells traveling in blood are called __________.

- neurotransmitters
- hormones
- second messengers
- autocrine chemicals