Lecture 3: Chemical Signals in Animals

Question 1

conveys high-speed
electrical signals along specialized cells called neurons; these signals regulate other cells

Answer 1

Nervous System

Question 2

secretes hormones that coordinate slower but longer-acting responses
including reproduction, development, energy metabolism, growth, and behavior

Answer 2

Endocrine System

Question 3

Regulatory Mechanisms

Answer 3

(1) Nervous System
(2) Endocrine System

Question 4

Are chemical signals that are secreted into the circulatory system and communicate regulatory messages within the body

Answer 4

Hormones

Question 5

Hormones reach all parts of the body, but only _____ are equipped to respond

Answer 5

Target Cells

Question 6

Hormones responsible for insect metamorphosis

Answer 6

()1 steroid 20-hydroxyecdysone
(2) lipid juvenile hormone

Question 7

Types of Glands

Answer 7

(1) Exocrine Glands
(2) Endocrine Glands

Question 8

secrete chemicals into ducts and the effect is where the duct empties (i.e., sweat glands)

Answer 8

Exocrine Glands

Question 9

secrete chemical messengers (hormones) into the blood for distribution throughout the animal’s body and bind to specific hormone receptors.

Answer 9

Endocrine Glands