The science that deals with the functions of an organism or its parts
The Study of cells
Pertaining to the space between tissues
What is the smallest unit of life?
Delicate structure that encloses the cytoplasm and forms the outer boundary of a cell.
What are the four stages of Mitosis?
Prophase- Chromatin becomes organized
Metaphase- Chromosomes align, nucleoulus disappear
Anaphase- Two daughter cells start to divide
Telophase- Cell division is completed
What is tissue?
Group of specialized cells joined together to perform a function.
What are the four types of tissue?
Diagnosis and treatmentof skin disorders.
What are the three layers of the skin?
What do epithelial cells produce?
Keratin which waterproofs the skin and protects the epidermis and underlying structures from injury, drying and invasion of foreign organisms.
What do Melanocytes produce?
Melanin which gives skin it's color and absorbs ultraviolet light.
What layer of skin is called the "True Skin"?
What is the Dermis composed of?
Connective tissue, collagen, elastic fibers, blood vessels, hair follicles, nerve ending, smooth muscles and seat/oil glands.
What does Subcutaneous skin contain?
Connective tissue, adipose tissue and nerve endings.
What are Sudoriferous glands and what do they do?
Sweat glands that provide cooling by producing perspiration which evaporates when the body is hot.
What do nerve endings in the skin do?
Carry impulses to and from the central nervous system.
What are the accessory structures of the untegumentary system?
Hair and nails.
What do the nails do?
Protect many sensitive nerve ending found at the end of the digits.
What do the eyelashses/eyebrows do?
Protects the eyes from foreign particles.
A traumatic injury to tends, ligaments or muscles around a joint.
Damage usually musculat that results from excessice physical force.
The point of contact between bones and cartilage or teeth and bones alson known as a joint,
What are the the two groups of the skeletal system?
How many bones are in the skull?
Which ribs are known as "True Ribs"?
The first seven pairs that arrach directly to the sternum and vertebrea
What ribs are attached only to the seventh rib?
The next three sets also know as false ribs.
What ribs are attached only to the lumbar spine?
The last two sets know as floating ribs.
What is the clavicle?
What are the three sections of the pelvic girdle?
Ishium-articulates with the ilium and pubis
Pubis-symphysis pubis joins the two pubic bones
What is the femur?
Longest stronges and heaviest bone of the body.
What are two functions of skeletal muscles?
Providing movement, maintaining body posture
What does the masseter muscle do?
Raises the mandible for cheweing
Decreases the angle of a joint. forearm moves towards the upper arm
Increase the angle of a joint forearm moves away from the upper arm
Moves a body part away from the midline arm is extended away from the body
Moves a body part toward the midline, arm is moved toward the body
palm is turned upward
palm is turned downward
twists a body part outward turning the sole of the foot outward
Twist a body part inward truing the sole of the foot inward
Basic structural and functional unit of the nervous systme and conduct impulses.
Thin receptive branches that differ greatly in size, shape and number and transmit impulses to neron cell bodies.
What are three types of nuerons?
What composes the centeral nevrous system?
Brain and Spinal Cord
Largest and most superiorly situated portion of the brain
Associated with higher mental proscesses (memory)
Associated with general sensation
Consists of the mid-brain, pons, and medulla oblongata
Relays impulses for some cranial nerves
Inferior most portion of the brain before the spinal cord. Controls functions like breathing and heart beat.
Conducts motor and sensory impulses to and from the brain
What are the three layers of the Meninges?
1.Dura Mater-Tough outter layer
2. Arachnoid Membrane-delicatd middle layer made of web like connective tissue
3. Pia Mater- vascular inner layer that adhere brain to the spinal cord
Clear, watery liquid that surrounds the brain. Its a protective cushion and exchanges nutrients and waste.
Fight or flight response
Conserves and Restores energy
Pigmented structure that gives the eye it's color.
The bending of light rays
Medical movement of the two eyeballs so they are both directed toward the object being viewed.
Cartilage located on each side of the head that collects sound from the environment
"Earwax" Protects external auditory canal against small foreign debris.
Tympanic Membrane (Eardrum)
A thin membran stretched across the auditory canal that separates the outer middle ear. The function is to transport sound to the auditory ossicles through vibration.
Three ossicles (bones) that transmit vibrations from the tympanic membrane to the fluid in the inner ear.
What are the three ossicles?
Fluid located in the inner ear that ripples when the issicles move, which causes the cochlea to move
A small snail shaped organ that convers the mechanical ripples to the endolymph into nerve impulses
Three semicircular canals situated perpendicularyly to each other in the temporal bone that stimulates nerve endings.
The study of the heart and diseases associated with it.
Pertaining to or containin many blood vessels
What type of tissue is blood
A connective tissue
Red blood cells that carry oxygen to the cells and carbon dioxide away from the cells.
White blood cells that seve as the bodys primary defense against infection.
Platelets cells that assist in coagulation.
pointed end of the heart formed by the tip of the left ventricle
Middle layer of the heart wall. Thickest layer and responsible for the pumping action.
What nervous system controls the condustion system of the heart?
Autonomic Nervous System
What does calcium in the blood do?
It increases the strenght of the hearts contraction.
Sinoatrail Node (SA Node)
Pacemaker of the heart located in the right atrium.
Transmits impulses throughout the ventricula walls.
What is the purpose of blood vessles and what are they made of?
To carry blood throught the body and made of smooth involuntary muscles.
Largest artey in the body
Used to take blood pressure
Supply blood to the hands
Supply blood to lower extermities
What are arterioles?
Very small almost mircoscopic arteries.
what are one-way valves in the viens?
Valves that prevent the backflow of blood in the viens
Absence of breathing
What does the nasal chambers do to the air you breath?
Filter, moisten and warms the air.
Connects the oral and nasla cavities
Flap of tissue that covers the entrance to the larynx to prevent food from entering the trachea
where the vocal cords are located
Subdivision of the brochi that provide a passageway for air to reach the lungs
Oxygen exchanges with carbon dioxide by diffusion throught eh alveolar and capillary walls
Right lung has three lobes left long have two lobews
Enclose and protects the longs
The primary muscle of respirations
A foreign agent that stimulates white blood cells to make anitbodies
a malignant tumor of the lymph nodes
Organ located in the upper left quadrant of the adbomen that stores red blood cells and destroy red blood cells also makes white blood cells
Two endocrine glands located above the kidneys that produce the hormone adrenalin
Enlargement of the thyroid gland
Hormone produced by the pancrease and released into the bloodstream which allows sugar to lave the blood and enter the cells
A structure in the brain that creates chemicals that are secreted to the pituitary gland to stumulate the release of hormones.
A hormone that stimulates contration of the muscles of the uterus
Secretes the iodine containing hormon thyroxin which controls the rate of cell metabolism.
What are the charactistics of Hypothyroidism
1. Decreased basal metabolism
2. Absence of sweating
3. Constan fatigue
4. Weight gain
5. Slow heart rate
What does the adrenal medulla secrete?
What does the destruction of the islet cells lead to?
A yellow/orange fluid produced by the liver that helps digest fats
liver disease with a deterioration of the liver cells
Inflammation of the GI tract marked by bouts of diarrhea abdominal cramping and fever
hormone produced in the pancrease and released into the blood stream
Movement of food
Peristalsis moves food throught the gastrointestinal tract through successive muscular contrations
A process that uses mechanical and chemical breakdown of food so it can be absorbed
Structure where the greatest amount of chemical digestion and food absorption occurs
Abnormal pregnancy in which the fertilized egg implants itself outside the uterine cavity
Inflammation of the nephrons and renal pelvis of one or two kidneys
Soild mass that many form in the urinary tact (kidney stone)
Vas Deferens (Seminal Duct)
Carries sperm to the ejaculatory duct
Where does fertilization of the egg normally occur?
Inner ayer of th euterus that sloughs off every 28-35 days
What is the durations of a norma menstrual cycle?
24-35 days with an average lenght of 28 days.
What is ovulation?
The release of a oocyte(egg) from the ovary into the fallopian tube. Occurs normally on the 14th day of the cycle
Outer layer of the kidney that is reddish in color
How much urine does the average adult excrete in 24 hours?
1-2 liters with 95% being water and 5% waste products
Process by which urine is expelled from the body.