Science Unit 9 Practice Test

white blood cells

As the primary component of the immune system, the function of the ____________ is to target and destroy harmful bacteria and other invading substances.

systemic

Blood flows from the heart to other parts of the body in ______________ circulation

living, phosphorous

Bones are made of ____ cells, as well as substances such as calcium, _____ , and fibers.

neurons, dendrites

The peripheral nervous system is made of tiny cells called ____ . Each is composed of three basic parts the body,_______ , and axons.

epithelial tissues

They form the protective covering for each organ

epithelial tissues

What is the epidermis made of?

liver

What organ filters out waste from nutrients before sending them out to the cells?

medulla

Which is an organ that controls breathing, heartbeat, blood pressure, and most involuntary movements?

cerebellum

Which is an organ that works with skeletal muscles to keep the body in balance and allows a person to make voluntary movements, such as walking, speaking, and moving limbs?

top

Which layer of the epidermis does this describe? . mostly dead cells stacked . made of epithelial

subcutaneous layer

Which layer of the skin is made of fat cells and act as an insulator and a cushion for the skin?

muscle tissue

Which type of tissue is able to stretch and shrink as needed to enable movement?

nerve

Which type of tissue works with the brain to carry main electrical impulses?

endocrine

_____ system produces hormones to regulate the body in response to internal stimuli

excretory

_____ system removes waste

digestive

______ system breaks down food for use; absorbs nutrients from food

lymphatic

______ system collects excess fluids; fights infection

reproductive

______ system is used to create another human being

muscular

______ system provides movement, heat, facial expression, heartbeat, and strength for the body

circulatory

______ system pumps blood; transports blood containing oxygen and carbon dioxide

nervous

______ system senses and responds to stimuli from both outside and inside the body

skeletal

______ system supports, moves; protects, and stores calcium for the body

reproductive

begins and supports the production of new human beings

white blood cells

cells are much larger than red blood cells and contain nuclei

hormones

chemicals formed in endocrine glands and sent to other parts of the body through the bloodstream; affect the functions of organs and tissues of the body

egg

fertilization takes place when a sperm cell unites with an ____ cell

antigens

foreign substances that cause the body to produce antibodies

adrenal glands

help the body respond to excitement and stress

small intestine

in the ____ ______, nutrients in food are then absorbed into the bloodstream

human body tissues

large groups of the same type of cell, all working together for one purpose

plasma

liquid part of blood; contains mostly water

hemoglobin

molecule in red blood cells that is able to carry both oxygen and carbon dioxide

integumentary

protects body from outside bacteria; keeps organs safely inside body

platelets

small fragments enable blood to clot

nutrients

substances in food that provide energy for the body and enable its cells to develop and grow

chemical digestion

takes place when the food is broken down into its various chemical components by digestive juices and other chemical materials in the body

nervous

the brain, spinal cord, and peripheral nerves make up the _____ system

kidneys

the function of the _______ is to collect and filter blood from the bloodstream and to send wastes to the bladder

dermis

these vessels and glands (blood vessels, nerve receptors, hair follicles, hair, sweat glands, oil glands, wax glands and muscles) are contained in what layer of the skin?

spinal chord

thick cord of nerves and blood vessels bundled together, that could be called the communication headquarters

alveoli

tiny sacs in the lungs that fill with oxygen

capillaries

tiny vessels that connect the other vessels and allow gas exchange and waste pickup to take place

pacemaker

tissue that controls the rhythm of the heartbeat

central

which part of the nervous system does this describe? .located in the center of the body and includes the brain and the spinal cord .command and communication center that gives all of the orders and takes in all of the information from various stimuli

lymph nodes

work to trap and filter out harmful materials found in the lymph before returning the fluid to the circulatory system