Intro to Human Biology

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Questions and Answers

What is considered the smallest unit of life?

  • Tissue
  • Organelle
  • Atom
  • Cell (correct)

Which system includes the skin, hair, and nails?

  • Muscular system
  • Nervous system
  • Endocrine system
  • Integumentary system (correct)

Where are the lungs located in the body?

  • Thoracic cavity (correct)
  • Pelvic cavity
  • Abdominal cavity
  • Cranial cavity

What is the main job of red blood cells?

<p>Transport oxygen (B)</p> Signup and view all the answers

Which system makes hormones?

<p>Endocrine (C)</p> Signup and view all the answers

The spinal cord is part of which system?

<p>Central nervous (D)</p> Signup and view all the answers

Which organ filters blood to produce urine?

<p>Kidney (D)</p> Signup and view all the answers

What type of muscle is in the walls of hollow organs?

<p>Smooth (C)</p> Signup and view all the answers

What do platelets do?

<p>Help blood clot (C)</p> Signup and view all the answers

Which part of a neuron receives signals?

<p>Dendrite (D)</p> Signup and view all the answers

What membrane surrounds the heart?

<p>Pericardium (A)</p> Signup and view all the answers

Which joint has the most movement?

<p>Ball-and-socket (C)</p> Signup and view all the answers

Which tissue stores fat?

<p>Adipose (A)</p> Signup and view all the answers

What is the function of the mitochondria?

<p>Energy production (D)</p> Signup and view all the answers

What does the diaphragm assist with?

<p>Respiration (D)</p> Signup and view all the answers

Which body plane divides the body into left and right?

<p>Sagittal (B)</p> Signup and view all the answers

What type of muscle is under voluntary control?

<p>Skeletal (C)</p> Signup and view all the answers

Which system defends against pathogens?

<p>Immune (A)</p> Signup and view all the answers

What is the human body's biggest organ?

<p>Skin (C)</p> Signup and view all the answers

What is the function of hemoglobin?

<p>Carry oxygen (B)</p> Signup and view all the answers

Which of the following is an example of a cell?

<p>Neuron (A)</p> Signup and view all the answers

What is the primary function of the skeletal system?

<p>Provide support and structure (C)</p> Signup and view all the answers

Which of the following is a function of the digestive system?

<p>Breaking down food for nutrient absorption (D)</p> Signup and view all the answers

What is the main function of the respiratory system?

<p>Exchanging gases (oxygen and carbon dioxide) (D)</p> Signup and view all the answers

Which of the following is a component of the circulatory system?

<p>Heart (D)</p> Signup and view all the answers

What is the role of antibodies in the body?

<p>Fighting infections (B)</p> Signup and view all the answers

Which organ system helps regulate fluid balance in the body?

<p>Urinary system (B)</p> Signup and view all the answers

What type of tissue covers the body's surfaces and lines its cavities?

<p>Epithelial tissue (B)</p> Signup and view all the answers

Which type of joint is found in the knee?

<p>Hinge joint (D)</p> Signup and view all the answers

What is the function of melanin in the skin?

<p>Protect against UV radiation (B)</p> Signup and view all the answers

Which of the following is a function of the liver?

<p>Detoxifying blood (D)</p> Signup and view all the answers

What is the purpose of the myelin sheath?

<p>Speed up nerve impulse transmission (D)</p> Signup and view all the answers

Which of the following is a function of bone marrow?

<p>Producing blood cells (C)</p> Signup and view all the answers

What is the role of the pancreas in digestion?

<p>Secreting digestive enzymes (B)</p> Signup and view all the answers

Which structure connects muscles to bones?

<p>Tendons (D)</p> Signup and view all the answers

What type of tissue is blood?

<p>Connective tissue (C)</p> Signup and view all the answers

Which of the following is a waste product excreted by the kidneys?

<p>Urea (B)</p> Signup and view all the answers

What is the purpose of the villi in the small intestine?

<p>Increase surface area for absorption (A)</p> Signup and view all the answers

Which of the following is a function of the lymphatic system?

<p>Filtering lymph and fighting infection (C)</p> Signup and view all the answers

Which cavity are the lungs located in?

<p>Thoracic (A)</p> Signup and view all the answers

What is the name of the membrane that surrounds the heart?

<p>Pericardium (A)</p> Signup and view all the answers

Which is the organ that filters blood and forms urine?

<p>Kidney (A)</p> Signup and view all the answers

Which joint type allows the most movement?

<p>Ball-and-socket (B)</p> Signup and view all the answers

What tissue type stores fat?

<p>Adipose (C)</p> Signup and view all the answers

Flashcards

What is a cell?

The smallest unit of life.

Integumentary System

The body system including skin, hair, nails, and sweat glands.

Thoracic Cavity

The body cavity where the lungs are located.

Function of Red Blood Cells

To transport oxygen throughout the body.

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Endocrine System

The organ system responsible for producing hormones.

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Central Nervous System

The part of the nervous system consisting of the brain and spinal cord.

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Kidney

An organ that filters blood and produces urine.

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Smooth muscle

A type of muscle tissue found in the walls of hollow organs.

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Function of platelets

To help blood clot

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Dendrite

The part of a neuron that receives incoming signals.

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Pericardium

The membrane surrounding the heart.

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Ball-and-Socket Joint

A joint that allows for the greatest range of motion.

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Adipose tissue

A connective tissue that stores fat.

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Mitochondria function

Energy production (ATP)

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The Diaphragm

A muscle that assists in respiration.

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Sagittal Plane

A body plane that divides the body into right and left halves.

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Skeletal Muscle

Muscle type under voluntary control.

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Immune System

The organ system that defends the body against pathogens.

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Skin

Largest organ of the human body.

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Hemoglobin function

To carry oxygen.

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Study Notes

  • The smallest unit of life is a cell.
  • The integumentary system includes the skin, hair, nails, and sweat glands.
  • The lungs are located in the thoracic cavity.
  • Red blood cells primarily function to transport oxygen.
  • The endocrine system produces hormones.
  • The brain and spinal cord are part of the central nervous system.
  • The kidney filters blood and produces urine.
  • Smooth muscle tissue is found in the walls of hollow organs.
  • Platelets help in blood clotting.
  • Dendrites receive incoming signals for a neuron.
  • The heart is surrounded by the pericardium.
  • Ball-and-socket joints allow for the greatest range of motion.
  • Adipose tissue stores fat.
  • Mitochondria's function is energy production.
  • The diaphragm assists in respiration.
  • The sagittal plane divides the body into right and left halves.
  • Skeletal muscle is under voluntary control.
  • The immune system defends the body against pathogens.
  • The largest organ in the human body is skin.
  • Hemoglobin transports oxygen.

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