Nervous system
What is the main job of the nervous system?
To collect and process information from the environment and help the body respond.
Where does digestion begin in many animals (name one structure that starts mechanical digestion)?
Digestion often begins in the mouth (teeth) where food is broken down mechanically.
What gas does the respiratory system take in that animal cells need to release energy from food?
Oxygen
What is the main organ in the circulatory system?
The heart
What connects muscles to bones and helps produce movement? (name the tissue)
Tendons
Name two sensory organs animals use to collect information from their environment.
Eyes and ears (also acceptable: skin, hairs, antennae).
Which organ absorbs most nutrients into the bloodstream?
The small intestine
Give two ways oxygen can enter an animal’s body (different organs or structures).
Examples: lungs, gills, skin (also other specialized organs)
How m any chambers are in the heart and what are they called?
What is the difference between an exoskeleton and an endoskeleton?
An exoskeleton is an external hard covering (outside the body), while an endoskeleton is an internal framework of bones or other hard structures inside the body.
What type of neuron detects signals from the environment and sends them toward the brain?
Sensory neurons
Name two organs that are part of the excretory system and the waste each one helps remove.
Examples: skin — removes excess salts and water through sweat; lungs — remove carbon dioxide and water vapor when you exhale; kidneys — filter liquid wastes (like urea) from the blood to make urine.
What is the main role of the heart in the cardiovascular system?
The heart pumps blood through the blood vessels to transport oxygen, nutrients, and wastes.
What are the three type of blood vessels and what do they do?
Arteries: Carry oxygenated blood away from the heart to the rest of the body
Veins: Carry deoxygenated blood to the lungs to receive oxygen
Capillaries: Cary blood through all parts of the body, exchange carbon dioxide for oxygen in the lungs with the aveoli
Cardiac Muscles can only be found in the heart. True or false?
True: Cardiac muscles are only found in the heart
Explain how sensory neurons, the brain, and motor neurons work together when you touch something hot.
Sensory neurons detect the heat and send signals to the brain; the brain processes the information and sends signals through motor neurons to the muscles to pull your hand away.
Describe how the digestive and excretory systems work together after you eat a meal.
After you eat, the digestive system breaks food down and nutrients are absorbed into the bloodstream; the blood carries wastes produced by metabolism to excretory organs (like kidneys and lungs) so those wastes can be removed from the body.
Explain how the respiratory and circulatory systems work together to deliver oxygen to body cells and remove carbon dioxide.
The respiratory system brings oxygen into the body and removes carbon dioxide; oxygen passes into the blood in the respiratory organs, the circulatory system carries that oxygen to cells, and blood transports carbon dioxide back to the respiratory organs to be exhaled.
The blue our veins carry is blue. True or False?
False
What are three muscles types? Which ones are voluntary and which ones are involuntary?
Skeletal Muscles- Voluntary
Smooth Muscle- Involuntary
Cardiac Muscle- Involuntary
Describe one way the nervous system helps an animal survive in a changing environment and give a specific example
Explain why the kidneys and large intestine process different types of waste and how that helps keep the body healthy.
Kidneys filter liquid metabolic wastes and balance salts and water, while the large intestine compacts and removes solid wastes; processing different wastes prevents toxic buildup and maintains homeostasis.
What is the lymphatic system & what are its main components?
The lymphatic system fights off infections in the blood stream. Its made up of lymph, lymph nodes, and lymphatic vessels.
What jersey is Mr. Hernandez wearing?
DC United
What are muscle cells called and what do they look like? (Be specific for each type of muscle)
Muscle fibers are muscle cells. For skeletal muscles they are long and striated