Feedback Loop & the Endocrine System

Presentation

•

Biology

•

11th - 12th Grade

•

Easy

Mr. Cavida

Used 3+ times

FREE Resource

20 Slides • 24 Questions

Feedback Loop & the Endocrine System

By Mr. Cavida

Objectives:

a. Define what is a feedback loop

b. Differentiate a negative feedback loop from a positive feedback loop.

c. Describe the function of the endocrine system

Multiple Choice

What is the point of a feedback loop?

To provide the body with more energy

To provide the body with more food

To make sure the conditions in the body are always changing

To make sure the conditions in the body remain stable

Multiple Choice

A feedback loop best fits which characteristic of life?

Cells

Organization

Homeostasis

Adaptation

Multiple Choice

In this body temperature feedback loop, predict what would happen if cooling mechanisms were NOT activated?

The body would not warm up.

The body would not cool down.

Your body would get colder and colder.

Your body would release lots of heat.

Multiple Choice

Failure to maintain homeostasis could result in:

lack of internal balance

eventual death

difficulty carrying on metabolism

all three

Multiple Choice

The two types of feedback systems that help organisms maintain homeostasis are:

positive and negative

receptor and effector

static and dynamic

minor and major

Multiple Choice

Maintaining body temperature is an example of a:

negative feedback loop

positive feedback loop

Multiple Choice

The process of childbirth is an example of:

negative feedback loop

positive feedback loop

Multiple Choice

The "cause" for something to happen is the

response

effect

stimulus

homeostasis

Multiple Choice

The "effect" of a given stimulus is the...

response

stimulus

cause

result

Multiple Choice

The name for a chemical made by glands that tell cells to make something or respond in some way.

acid

enzyme

perspiration

hormone

Multiple Choice

When you get cut, your skin cells release hormones that signal platelets to come and stop the bleeding. Platelets then release more hormones that signal even more platelets to help stop bleeding. The hormone signals continue until the cut is closed.

Positive Feedback Response

Negative Feedback Loop

Multiple Choice

Rapid growth during puberty causes your body to release more and more growth hormones. As you grow, more and more growth hormones are released until puberty is reached, and then the hormones stop.

Positive Feedback Response

Negative Feedback Loop

Multiple Choice

Negative Feedback Loops:

amplify processes

prevent small changes from getting larger

are initiated during childbirth

are found only in plants

Multiple Choice

What does the term "steady state" refer to with respect to the process of homeostasis?

balanced external environment

balanced internal environment

changing external environment

changing internal environment

Multiple Choice

What is the pituitary gland?

the master gland

helps you go to sleep

influence metabolic rate

decrease blood calcium

Multiple Choice

Function of pituitary gland:

produces the highest number of different hormones

senses the hormone levels in the blood

increase bone calcium levels

decrease blood calcium

Multiple Choice

What is the function of hypothalamus?

the master gland

controls all other endocrine glands

senses the hormone levels in the blood

helps you go to sleep

Multiple Choice

Endocrine glands secrete _

Hormones

Neurotransmitters

A wide range of chemical substances

Multiple Choice

What is the main function of the endocrine system?

It creates chemicals, or hormones, that are sent around the body to maintain homeostasis.

It creates electrical messages that are sent around the body to maintain homeostasis.

It maintains the correct level of oxygen in the body to maintain homeostasis.

It releases waste from the body to maintain homeostasis.

Multiple Choice

An organ that produces secretions called hormones is known as a :

chemical

gland

hormone

duct

Multiple Choice

This gland is located between the lungs behind the sternum and secretes thymosin that helps mature WBC's in our bodies when we are children.

thyroid

parathyroid

thymus

brain stem

Multiple Choice

What is gland #3?

Adrenal Gland

Pancreas

Ovaries

Testes

Multiple Choice

targets the brain and make people sleepy when its dark

melanin

melanoma

melatonin

melons

Poll

I am confident that I will pass the BA3 next week!

Surely!

Not sure.

Definitely I will fail!!!

Feedback Loop & the Endocrine System

By Mr. Cavida

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