Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Science > Lesson 2 > Flashcards

Lesson 2 Flashcards

(76 cards)

Start Studying
1
Q
A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What systems in the human body work together to perform necessary functions for life?

A

Respiratory system, circulatory system, nervous system, endocrine system

These systems collaborate to ensure cells receive oxygen and organs respond to signals.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

How do the skeletal, muscular, and nervous systems interact to enable movement?

A

Skeletal muscles attach to bones, providing force for movement; muscles contract and relax under nervous system control

This interaction allows for actions like standing on one leg.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What happens to a muscle when it contracts?

A

It shortens and pulls on the bones to which it is attached

This action is essential for movement and stability.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Fill in the blank: The _______ system carries out commands from the nervous system.

A

endocrine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What can you feel when you stand on one leg and bend the other leg at the knee?

A

Activation of the muscles at the back of the thigh

This demonstrates the role of skeletal muscles in maintaining balance.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

True or False: The respiratory system provides oxygen directly to the muscles.

A

False

The respiratory system provides oxygen to the circulatory system, which then delivers it to the muscles.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the role of the nervous system in muscle movement?

A

Controls when and how muscles act on bones

This includes coordinating movements and responses to external stimuli.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Fill in the blank: All systems in the human body work together to perform all the necessary _______.

A

functions for life

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What type of muscles are attached to the bones of the skeleton?

A

Skeletal muscles

They are responsible for voluntary movements.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q
A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the central idea of the text?

A

The body is organized into systems that interact with each other.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are the two ways the nervous system controls body functions?

A

Electrical signals and chemical signals from the endocrine system.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What do blood vessels from the circulatory system carry to cells?

A

Nutrients and oxygen.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What do blood vessels carry away from cells?

A

Carbon dioxide and waste.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are the smallest blood vessels called?

A

Capillaries.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Why do capillaries need to be small?

A

To pass near every cell in the body.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What do blood cells pick up from the lungs?

A

Oxygen.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Where do blood cells collect carbon dioxide from?

A

From the cells in the body.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What filters waste products from the blood?

A

The kidneys in the excretory system.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Fill in the blank: A ______ is an action or change in the environment.

A

stimulus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What is a reaction time?

A

The time that passes from a stimulus until a response occurs.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

True or False: The nervous system only uses electrical signals to control body functions.

A

False.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What is the role of the circulatory system?

A

To transport materials to and from every part of the body.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
What happens to waste products filtered by the kidneys?
They are passed out of the body in urine.
26
What is the relationship between stimulus and response?
A stimulus causes a response.
27
How does a blocked blood vessel affect an organism?
It would hinder the transport of nutrients and oxygen.
28
What is a stimulus?
A change or signal in the environment that can make an organism react ## Footnote Stimuli can include loud noises, hot objects, or specific odors.
29
What is a response?
An action or change in behavior that occurs as a result of a stimulus ## Footnote Responses often involve the nervous system and other body systems.
30
What is reaction time?
The time that passes between a stimulus and a response ## Footnote A short reaction time can prevent accidents or improve performance in activities like video games.
31
Which body systems help you react to stimuli?
Nervous system, muscular system, skeletal system, and digestive system ## Footnote For example, the nervous system directs responses, and the digestive system may prepare for food even before it is ingested.
32
Fill in the blank: Any change or signal in the environment that can make an organism react is called a _______.
stimulus
33
True or False: Reaction time can be influenced by environmental conditions.
True ## Footnote Factors like time of day or mental alertness can affect how quickly a person reacts.
34
What factors could influence reaction time according to the investigation plan?
Time of day, type of stimulus, environmental conditions, state of mental alertness ## Footnote These factors can be tested to see their effect on reaction times.
35
What role do capillaries play in the body?
They carry nutrients and molecules from the blood to the cells and remove waste ## Footnote Capillaries are the smallest blood vessels in the body.
36
What does the American Sign Language expression for hot demonstrate?
A reaction to hot food ## Footnote This expression illustrates how stimuli can prompt responses.
37
What is the role of the endocrine system?
The endocrine system controls body functions through hormones released into the bloodstream ## Footnote The endocrine system is made up of glands and organs that produce and release chemicals.
38
What is a hormone?
A hormone is a chemical produced by an endocrine gland ## Footnote Hormones are carried through the body by the circulatory system.
39
How does the endocrine system prepare the body for action when startled?
The adrenal glands send signals that increase heart rate, enhance lung capacity, decrease pain sensitivity, and dilate pupils ## Footnote These responses are part of the 'fight or flight' reaction.
40
Which systems do hormones interact with to control water levels in the bloodstream?
The excretory system and the circulatory system ## Footnote Hormones help regulate the amount of water in the bloodstream.
41
Which systems do hormones interact with to control sugar levels in the bloodstream?
The digestive system and the circulatory system ## Footnote Hormones play a role in regulating blood sugar levels.
42
True or False: Hormones affect the reproductive systems of both males and females.
True ## Footnote Hormones have significant effects on reproductive functions.
43
What are some effects of hormones during puberty?
Hormones can cause dramatic and long-lasting changes in the body ## Footnote Examples include physical growth and development in boys and girls.
44
Fill in the blank: The endocrine system uses _______ to control body functions.
hormones ## Footnote Hormones are released directly into the bloodstream.
45
What does the term 'fight or flight' refer to?
A physiological response that prepares the body for action when faced with a threat ## Footnote This response includes increased heart rate and enhanced lung function.
46
How do hormones travel through the body?
Hormones are carried through the body by the circulatory system ## Footnote This allows hormones to affect various body processes.
47
What is one way to identify the difference between the endocrine system and the nervous system?
The endocrine system uses hormones while the nervous system uses nerve signals to control body functions ## Footnote This distinction highlights their different mechanisms of action.
48
What is homeostasis?
The condition in which an organism's internal environment is kept stable despite changes in the outside environment. ## Footnote Homeostasis is vital for life and involves various physiological processes.
49
What is the average body temperature that humans need to maintain for proper functioning?
Around 37°C. ## Footnote This temperature is crucial for the body's metabolic processes.
50
What happens to your body temperature when you go outside in the cold?
Your body temperature does not fall to meet the outside temperature. ## Footnote This is important for maintaining bodily functions.
51
What actions does the body take when the temperature starts to fall too low?
* Nervous system sends signals to other systems * Skin develops goosebumps * Muscles cause shivering * Movement of large muscles to generate heat ## Footnote These actions help raise the body temperature back to normal.
52
Fill in the blank: The condition in which an organism's internal environment is kept stable is called _______.
homeostasis
53
What is the role of the nervous system in temperature regulation?
It sends out signals to other systems to take action to warm the body. ## Footnote This includes activating muscles and skin responses.
54
What is the integumentary system's response to low body temperature?
The skin develops goosebumps. ## Footnote Goosebumps help in retaining body heat.
55
List some ways to cool the body.
* Sweating * Moving to a cooler environment * Drinking cold fluids ## Footnote These methods help maintain a stable body temperature.
56
True or False: The body functions well at temperatures significantly lower than 37°C.
False. ## Footnote The body requires a stable temperature around 37°C for optimal functioning.
57
What is meant by the term 'stable' in the context of homeostasis?
Something that hasn't changed much and isn't expected to change much in the future. ## Footnote Stability is crucial for maintaining homeostasis.
58
What happens to the body in extreme heat conditions?
The body must still regulate temperature to remain close to 37°C. ## Footnote This involves sweating and other cooling mechanisms.
59
What role do muscles play in balance?
Muscles move to correct your balance ## Footnote Muscles work in coordination with other systems to maintain stability.
60
What do the structures in your inner ear sense?
The position of your head ## Footnote This information is critical for maintaining balance.
61
What happens when your brain senses you are losing balance?
It sends messages to your muscles to move in ways that help you stay steady ## Footnote This is part of the balance cycle.
62
What signals do hormones from the endocrine system send when cells need energy?
They signal the nervous system to make you feel hungry ## Footnote This process ensures that the body meets its energy needs.
63
What occurs after you eat in terms of hormone signaling?
Other hormones signal your brain to make you feel full ## Footnote This helps regulate food intake.
64
What is necessary for the chemical reactions that keep you alive?
A watery environment within your cells ## Footnote Water balance is crucial for homeostasis.
65
What does your nervous system cause you to feel when your body needs more water?
Thirst ## Footnote This prompts behavior to seek out water.
66
What happens after you have had enough water?
Your nervous system causes your thirst to end ## Footnote This restores water balance.
67
How do the ears, brain, and muscular system interact?
They make up the balance cycle ## Footnote This interaction is vital for maintaining homeostasis.
68
Fill in the blank: The _______ system directs muscles to steady you when you are off balance.
nervous ## Footnote The nervous system plays a key role in balance maintenance.
69
True or False: The body's temperature must stay within certain conditions to function properly.
True ## Footnote Temperature regulation is essential for life.
70
Define stress
The reaction of a person’s body to potentially threatening, challenging, or disturbing events
71
What does too much stress for too long cause
Disrupts homeostasis and weakens your body’s ability to fight disease. Along with depression, headaches, digestion problems, heart problems, etc.
72
What make you sick
Germs
73
Why do you have a fever
Because your body is devoting its resources to your immune system which is fighting off the disease
74
What is the immune system
Includes specialized cells that attack and destroy germs such as viruses and bacteria
75
What happens to the cells in your immune system when you’re sick
Temporarily increase in number
76

Science (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions