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Human Body Systems (Basic)


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Name the levels of organization.
Cells - Tissues - Organs - Organ Systems
How many organ systems are there in the human body?
The eleven morgan systems of teh human body work together to maintain ___________ in the body as a whole.
Nervous System
Recognizes and coordinates the body's response to chanes in its internal and external environments.
Integumentary System
Serves as a varrier against infection and injury; helps to regulate body temperature; provides protection aganist the ultraviolet radiation from the sun.
Repiratory System
Provides oxygen needed for cellular respiration and removes excess carbon dioxide from the body.
Digestive System
Coverts food into simpler molecules that can be used by the cells of the body; absorbs food; eliminates wastes.
Excretory System
Elimates waste products from the body in ways that maintain homeostasis.
Skeletal System
Supports the body; allows movement; stores mineral resources; proviedes a site for blood cell formation.
Muscular System
Works with skeletal system to produce a voluntary movement; helps to circulate blood and move food throught the digestive system.
Circulatory System
Brings oxygen, nutrients, and hormones to cells; fights infection; removes cell wastes; helps to regulate body temperature.
Endocrine System
Controls growth, development, and metabloism; maintains homeostasis.
Reproductive System
Produces reproductive cells; in females, nurtures and protects developing embryo.
Lymphatic/Immune System
Helps protect teh body from disease; collets fluid lost from blood vessels and resturns the fluid to the circulatory system.
What are the 4 types of tissue?
Epithelial, Connective, Nervous, Muscle
Epithelial tissue..
includes glands and tissues that cover the interior and exterior body surfaces
Connective tissue..
provides support for the body and connects it's parts
Nervous tissue..
transmits nerve impulses throughout the body
Muscle tissue..
along with bones, allows the body to move
What is homeostasis?
It is the process by which organisms keep internal conditions relatively constant despite changes in external environmetns.
What is feedback inhibition?
The process in which a stimulus produces a response that oppose the original stimulus.
A home heating system is an example of what?
Feedbhack inhibition.
Communication between two nerve cells takes place at?
Communication between two nerve cells is called?
come back
What is a joint?
A place where one bone attaches to another bone
Depending on the type of movement what are the different classifications of joints?
Immovable, Slightly moveable, freely moveable
Immovable joint..
Also called fixed joints, allow no movement. The bones are interlocked and held together by connective tissue. EX: where the bones and the skull meet
Slightly Moveable joint..
Small amount of restricted movement, bones are seperated from each other. EX: Between the two bones of the lower leg and the joints between the adjacent vertabrae
Freely Moveable joint..
Allow movement in one or more directions. There are 4 differnet types of Freely Movemable joints. EX: Elbow, Arm, Shoulder
What are the 4 types of Freely moveable joints?
Ball-and-Socket, Hinge, Pivot, Saddle
Ball-and-socket joint..
Allow movement in many directions. They allow the widest range of movement of any joint. EX: Shoulder
Hinge joint..
Allow back and forth movement, like the opening and closing of a door. EX: Knee
Pivot joint..
Allow one bone to rotate around another. EX: Elbow
Saddle joint..
Allow one bone to slide in two directions. EX: Hand
What is cartlidge?
A connective tissue
Cells that make up cartilage are scattered in a network of protein fibers including..
Collagen and Flexible Elastin
The skeletong of an embryo is composed almost entirely of?
What connects skeletal muscles to bones?
What is a tendon?
Tough connective tissue that connects skeletal muscles to bones.
What holds bones together at a joint?
What is a ligament?
They hold bones together in a joint, and are attached to the membranes that surround bones. They are located on the first layer of the joint capsule.
What does synovial fluid do?
It is a thin film on the cartilage that covers the bony surfaces that form the joint.
How many layers are in a joint capsule?
How many types of tissues are thier?
What are the different types of muscle tissue?
Skeletal, Smooth, Cardiac
Usually attached to bones, and are responsible for voluntary movements. Found in the leg.
Usually not under voluntary control. Found in the digest tract.
Foudn only in the heart. Not under voluntary control.
What is Muscle Tissue?
Found everywhere inside the body. Muscles.
Where is the epidermis?
The outer layer of the skin.
What layer of your skin is made up of dead skin cells?
The epidermis.
What is keratin?
A tough fiberous protein made in the inner layer of the epidermis.
What is melanin?
Dark brown pigment, that helps protect the skin from damage by absorbing ultraviolet rays from the sun.

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