Coordination And Response

Question 1

What are changes in an organism’s environment called?

Answer 1

Stimuli

Singular: stimulus

Question 2

What type of cells sense stimuli in animals?

Answer 2

Receptors

Receptors are specialized cells that detect changes in the environment.

Question 3

What are effectors in the context of animal response to stimuli?

Answer 3

Muscles and glands

Effectors respond to stimuli by contracting or secreting substances.

Question 4

How do muscles respond to a stimulus?

Answer 4

By contracting

Muscles are a type of effector that can contract in response to stimuli.

Question 5

What might glands do in response to a stimulus?

Answer 5

Secrete substances

For example, salivary glands secrete saliva in response to the smell of food.

Question 6

Why do animals need fast communication systems between receptors and effectors?

Answer 6

To move in search of food and avoid predators

Quick responses are essential for survival.

Question 7

What is the term for the way receptors pick up stimuli and pass information to effectors?

Answer 7

Coordination

Coordination ensures that the right effectors respond at the right time.

Question 8

What happens when you touch something hot?

Answer 8

Pain receptors send an impulse to arm muscles to contract

This reflex action pulls the hand away from the hot surface.

Question 9

What are the two methods of sending information from receptors to effectors in animals?

Answer 9

Nerves and hormones

Nerves provide a fast communication method, while hormones are slower.

Question 10

What is the fastest method of communication in an animal’s nervous system?

Answer 10

Nerves

Nerves transmit impulses quickly between receptors and effectors.

Question 11

What system do hormones belong to?

Answer 11

Endocrine system

Hormones are chemical messengers that communicate more slowly than nerves.

Question 12

Fill in the blank: The way in which receptors and effectors interact is called _______.

Answer 12

Coordination

Question 13

True or False: All animals rely solely on hormones for communication between receptors and effectors.

Answer 13

False

Most animals use both nerves and hormones for communication.

Question 14

What are changes in an organism’s environment called?

Answer 14

Stimuli

Singular: stimulus

Question 15

What type of cells sense stimuli in animals?

Answer 15

Receptors

Receptors are specialized cells that detect changes in the environment.

Question 16

What are effectors in the context of animal response to stimuli?

Answer 16

Muscles and glands

Effectors respond to stimuli by contracting or secreting substances.

Question 17

How do muscles respond to a stimulus?

Answer 17

By contracting

Muscles are a type of effector that can contract in response to stimuli.

Question 18

What might glands do in response to a stimulus?

Answer 18

Secrete substances

For example, salivary glands secrete saliva in response to the smell of food.

Question 19

Why do animals need fast communication systems between receptors and effectors?

Answer 19

To move in search of food and avoid predators

Quick responses are essential for survival.

Question 20

What is the term for the way receptors pick up stimuli and pass information to effectors?

Answer 20

Coordination

Coordination ensures that the right effectors respond at the right time.

Question 21

What happens when you touch something hot?

Answer 21

Pain receptors send an impulse to arm muscles to contract

This reflex action pulls the hand away from the hot surface.

Question 22

What are the two methods of sending information from receptors to effectors in animals?

Answer 22

Nerves and hormones

Nerves provide a fast communication method, while hormones are slower.

Question 23

What is the fastest method of communication in an animal’s nervous system?

Answer 23

Nerves

Nerves transmit impulses quickly between receptors and effectors.

Question 24

What system do hormones belong to?

Answer 24

Endocrine system

Hormones are chemical messengers that communicate more slowly than nerves.

Question 25

Fill in the blank: The way in which receptors and effectors interact is called _______.

Answer 25

Coordination

Question 26

True or False: All animals rely solely on hormones for communication between receptors and effectors.

Answer 26

False

Most animals use both nerves and hormones for communication.