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58 Cards in this Set

  • Front
  • Back
The smallest functioning unit of life that is capable of independent existence is what?

Cell
Describe the general structure and function of the plasma membrane of a cell.
It is composed of mainly lipids and proteins. They serve to separate and protect the cell from the surrounding environment.
Cite the special functions that occur within the cytoplasm of a cell.

Cell expansion, growth, and replication.
Describe the general function of the nucleus.

Determines how well the cell will function, as well as the basic structure of the cell.
Explain why cell division is important.

the process by which new cells are formed for growth, repair, and replacement in the body.
Define tissue and cite the four major types of tissue found in the human body.

Groups of cells that have similar structure and function. Epithelial, connective, muscle, and nervous.

Which tissue has the ability these functions?




(protection, secretion, absorption, excretion, filtration, diffusion, and sensory replacement)

Epithelial Tissue
Explain how the structure of connective tissue contributes to its function.

The matrix of connective tissue makes it able to bear weight, withstand great tension, and endure abuses that other tissue types wouldn't be able to tolerate.
What tissue has the special ability to shorten and contract in order to produce movement of the body parts.

Muscle Tissue
What is comprised of supporting cells and neutron s and is responsible for coordinating and controlling many body activities?
General structure and function of the nervous tissue.
Cite the five basic human senses.

sight, smell, taste, touch, and hearing.

What is the function of the sclera within the eye?

Provides strength to the fluid- filled eyeball.
This function to equalize the air pressure in the ear with the atmosphere. If the pressure is not equalized, the eardrum could burst.
Eustachian Tube within the ear.
Cite the seven functions of the skin.


1. protects the body from invasion by bacteria and other harmful microorganisms.


2. helps keep a constant body temperature


3. prevents water loss


4. excretes wastes


5. receives sensations


6. produces vitamins


7. absorbs certain drugs and other chemical substances.

Describe the function of bones within the skeletal system.
provides a rigid framework, which supports and protects the soft organs of the body.

Describe the role of vertebrae within the skeletal system.

surround and protect the spinal cord.

Cite the two divisions of the skeletal system and describe the structure of each.


Axial Skeleton: vertical axis of body. (head, ribs, breastbone)




Appendicular Skeleton: free appendages

Describe the function of the synovial membrane within joints.

Secretes synovial fluid into the joint cavity for lubrication.

Describe the relationship between the skeletal system and the muscles of the body.

provide movement and support.
What is responsible for skeletal movement?

Skeletal muscle
What contraction is involuntary, strong, and rhythmical?
Cardiac muscle
What extends over joints, contributing to joint stability?

Tendons

What is a by-product of muscle metabolism?
Heat production
What contraction is slow and rhythmical?

Smooth muscle

Cite the three functions of the nervous system.

Sensory, integrative, and motor.

What is the conducting cell that transmits impulses and the unit of the nervous system?

Neuron

What is non-conducting and provides a support system for the neurons?
Neuroglia
What is the conducting region of the neuron?

Axon

What collections of the nerve cell bodies outside the central nervous system?

Ganglia

What transmits impulses from peripheral organs to the central nervous system?

Sensory Division.

What transmits impulses from the central nervous system out to the peripheral organs to cause an effect/ action?

Motor Division.

Describe the relationship between the nervous system and the endocrine system.

Regulation of body activities
These glands have ducts that carry their secretory product to a surface.

Exocrine

Ductless glands

Endocrine

Regulate the metabolic function of other cells in the body.

Hormones

Referred to as the body's master gland.
Pituitary
Receives hormones and act as receptors.

Target cells
Produces the hormone thyroxine.

Thyroid
Secretes digestive enzymes.
Pancreas

Produces the sperm and ova.

Gonads
Describe the basic structure of the cardiovascular system.
consists of the heart and a closed system of vessels called arteries, veins, and capillaries.
Describe the role of the heart within the cardiovascular system.
provides the force necessary to circulate the blood to all the tissues in the body.
Transports disease fighting substances to the tissue and waste to the kidneys.

Blood
Transports blood away from the heart.

Arteries

Transports blood toward the heart

Veins
Regulate blood flow into the tissue capillaries.

Arterioles

Primary function is the exchange of materials between the blood and tissue cells.

Capillaries.

Channels through which blood is distributed to body tissues.
Blood vessels.

Cite the three primary functions of the lymphatic system.


1. return excess interstitial fluid to the blood




2. absorption of fats and fat-soluble vitamins from the digestive system and the subsequent transport of these substances to the venous circulation.




3. defense against invading microorganisms and disease.

Describe the response of the lymphatic system when the body is exposed to microorganisms or other foreign substances.

lymphocytes proliferate within the lymphatic organs and are sent to the site of the invasion in an attempt to destroy the invading agent.
Describe the relationship between the circulatory system and the respiratory system.
work together to provide oxygen and to remove the waste products of the metabolism.

Describe the act of breathing.
Pulmonary ventilation is the process of air flowing into the lungs during inhalation and out of the lungs during exhalation.

Describe the basic structure of the digestive system.
consists of a long continuous tube that extends from the mouth to the anus. It includes the mouth, pharynx, esophagus, stomach, small intestine, and large intestine.
Cite the main purpose of the digestive system.
Break down proteins, fats, and starches, which can't be absorbed intact into amino acids, fatty acids, and glucose that can be absorbed across the wall for the tube into the circulatory system for dissemination through the body.

Cite the primary function of the urinary system.

The primary function of the urinary system is to maintain the volume and composition of body fluids within normal limits.

Describe the role of the kidneys within the urinary system.
primary organ of urinary systems. They filter blood, remove the wastes, and excrete the wastes in the urine.

Explain the difference between the reproductive system and the other body systems.
They are devoted completely to the reproduction of offspring and are not necessarily vital to the individual's own survival.

Cite the four functions of the reproductive system.

1. produce egg and sperm cells


2. transport and sustain these cells


3. nurture the developing offspring


4. produce hormones