7th Science Human Body System Outline Flashcards
Name the body system with these major function -
- Releases chemical messages into the bloodstream.
- Helps to maintain homeostasis in the body
Endocrine System
What are the major organs in the Endocrine System?
- Endocrine Glands
2. Hormones
What is a chemical that is produced by an endocrine gland in one part of an organism and is carried in the bloodstream to another part of the organism?
Hormone
What other body systems does the Endocrine System work with?
Reproductive, Muscular, Skeletal and Nervous Systems
What reduces the amount of stress hormone in the blood?
Laughter
What is a physical who specializes in the diseases of the endocrine system?
Endocrinologist
Name the body system with these major function -
- Gathers information, or receives information, from your five senses - vision hearing, smell, taste and touch
- Processes the information
- Responds to information or stimuli
- maintains homeostasis
Nervous System
What are the major organs in the Nervous System?
- Brain
- Spinal Cord
- Neurons, or nerve cells
What is the part of the brain that controls memory, language, and thought?
Cerebrum
What is the part of the brain that coordinate voluntary muscle movement and regulate balance and posture?
Cerebellum
What is that area of the brain that controls involuntary functions and connects the brain and the spinal cord?
Brain Stem
What other body systems does the Nervous System work with?
Muscular and Skeletal
How fast can the signals received by the nervous system travel?
400 km/hour
Name the body system with these major function -
- Transports food, water, oxygen, and other materials to your body’s cells and tissues through your blood
- Eliminates waste materials through your blood
Circulatory System
What are the major organs in the Circulatory System?
- Heart
2. Blood Vessels
What are the upper two chambers of the heart?
Atria
What are the lower two chambers of the heart?
Ventricles
What is a vessel that carries blood away from the heart?
Artery
What is a vessel that brings blood toward the heart?
Vein
What other body systems does the Circulatory System work with?
Respiratory and Lymphatic Systems
What is size of the average human heart?
5 inches tall, 3.5 inches wide and 2.5 inches thick
Is the size of the human heart the same in everyone?
No, it varies by the size of the person.
Name the body system with these major function -
- To take in oxygen
- To eliminate carbon dioxide
Respiratory System
What are the major organs in the Respiratory System?
- Lungs
- Diaphragm
- Trachea
- Bronchi
What is the main organ of the respiratory system?
Lungs
What is a large muscle that contracts and relaxes to move air in and out of the lungs?
Diaphragm
What other body systems does the Respiratory System work with?
Circulatory System
What are caused when your diaphragm is irritated by eating too quickly or too much, or being nervous or excited?
Hiccups
Name the body system with these major function -
- Collects and eliminates wastes from the body
- Regulates the level of fluid in the body
Excretory System
What are the major organs in the Excretory System?
- Kidneys
2. Bladder
What is a bean-shaped organ that filters, or removes, wastes from blood?
Kidney
What is a muscular sac that holds urine until the urine is excreted?
Bladder
What body system does the Excretory System work with?
Digestive System
What can cause temporary color changes of your urine?
Some foods
Name the body system with these major function -
- Ingestion and digestion of food
- Absorption of nutrients from food
Digestive System
What are the major organs of the Digestive System?
- Tongue
- Salivary Glands
- Mouth
- Esophagus
- Stomach
- Small Intestine
- Large Intestine
What is the mechanical and chemical breakdown of food into small particles that your body can absorb and use?
Digestion
What is a muscular tube that connects the mouth to the stomach?
Esophagus
What is the waves of muscle contractions that move food through the esophagus and the rest of the digestive tract?
Peristalsis
What other body systems does the Digestive System work with?
Excretory System
Your digestive system is home to how many bacteria?
Between 10 and 100 trillion
Name the body system with these major function -
- Enables your skeleton to move
- To maintain balance or stability
- Protects your body
- Regulates body temperature
Muscular System
What are the major organs of the Muscular System?
- Skeletal muscles
- Heart (cardiac muscles)
- All organs made of smooth muscle tissue
What is a voluntary muscle that attaches to bones?
Skeletal Muscle
What is an involuntary muscle found only in the heart?
Cardiac Muscle
What is an involuntary muscles that are smooth in appearance?
Smooth Muscle
What other body systems does the Muscular System work with?
Skeletal System
How many facial muscles do you use when you smile?
17
How many facial muscles do you use when you frown?
43
When do you use the least about of facial muscles?
When you smile
Name the body system with these major function -
- Provides support
- Enables different parts of the body to move in different ways
- Skull protects the soft tissue of the brain
- Bones store fat and calcium
- Red blood cells produced in bones
Skeletal System
What are the major organs in the Skeletal System?
- Bones
2. Skeleton
What is a strong, flexible tissue that covers the ends of bones?
Cartilage
What is where two or more bones meet?
Joint
What is the tissue that connects two bones?
Ligament
What other body systems does the Skeletal System work with?
Muscular System
What is the largest bone in the body?
Femur
What is the smallest bone in the body?
Stirrup - a bone in your ear
How many bones are in the body?
206 to 208 depending on the scientist counting
Name the body system with these major function -
- Ensures survival of the human species
- Produces and delivers six cells
Reproductive System
What are the major organs in the Reproductive System?
- In males - testes, ducts, urethra, penis
2. In females - ovaries, fallopian tubes, vagina, uterus
What is the male reproductive cell?
Sperm
What is the female reproductive cell?
Egg
What other body systems does the Reproductive System work with?
Endocrine System produces hormones that control and aid in sexual development.
An egg is about how many times as wide as the head of a sperm.
40