Homeostasis and Human Body Systems Flashcards
Define Homeostasis
to regulate/maintain a stable internal environment while the external environment changes.
How do Organisms detect and respond to change?
A variety of ways; both at the micro and macro level.
How do plants maintain Homeostasis?
guard cells fill up with water during photosynthesis, regulating the flow of water into its pores.
Guard cells are aka…
Stoma, Stomata, Stomate
True or False: The body’s Systems interact with one another to allow you to maintain homeostasis.
True
Integumentary System; Major Structures
Skin, Hair, and Nails (made up of keratin)
Muscular System; Major Structures
Skeletal, Smooth, and Cardiac Muscle Tissues; Tendons
Nervous System; Major Structures
Brain, Spinal Cord, Nerves, and Sense organs
Skeletal System; Major Structures
Bones, Ligaments, and Cartilage
What does the Integumentary system do?
It protects the body against injury, infection, and fluid loss. This body system also helps regulate body temperature.
What does the Muscular system do?
It moves limbs, and substances through the body. It provides structure and support as well.
What does the Nervous system do?
It regulates behavior; maintains homeostasis; regulates all other organ systems; and controls senses and movement.
What does the Skeletal system do?
It provides protection and support for the body and organs; it works with skeletal muscles; it produces red blood cells through the bone marrow, white blood cells, and platelets.
Skeletal & Muscular Systems
Muscular; enables movement
Skeletal; provides support and protection for tissues and organs.
What attaches bone to bone?
Ligaments.
What attaches muscle to bone?
Tendons.
What cushions two bones?
Cartilage.
Voluntary VS. Involuntary
CAN be controlled VS. CANNOT be controlled.
Two bones moving the other way are called…
Joints.
When one muscle in the pair contracts, the other muscle…
relaxes to produce movement.
3 Types of Muscle cells
1) Cardiac Muscle, makes up the heart and is what keeps it pumping.
2) Skeletal Muscle, what moves your bones.
3) Smooth Muscle, makes up various organs like the stomach, veins, intestines, bladder, etc.
Why do babies have more bones than full-grown adults?
Their bones are not yet fused together. As you grow older, your bones would fuse together.
Integumentary System
protects the body from UV radiation and injury; defends against disease, helps regulate temperature, and prevents the body from drying out.
1st layer and 2nd layer of the skin is called…
Epidermis and Dermis.
