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Study of the human body
Science of body Function
What are the 3 major body cavities?
- Thoracic- ends at diapragm
- Pelvic- Can collect 3L of blood without any signs
Cell Function? 7 major
- The cell is the fundamental unit of the human body.
- merablic absorption
Difference between Aerobic and anarobic respiration?
- Aerobic- with O2
- Anarobic- without O2
Group of cells that perform a similar function
- Lines internal and external body surfaces and protects the body. Some forms perform specialized functions
- Fluid - blood and Lymph ( cantaned in lymphatic system)
- Supporting - Cartilage and Bone
Define Muscle Tissue
Contracts when stimulated.
Found only within the heart. Unique capability of spontaneous contraction w/e external stimulation
- Found with in intestines and encircling blood vessels
- Generally under control of the autonomic nervous system.
Skeletal muscle ?
allows movement and is generally under coluntary control - most abundant type. ( brain activated.)
Specialized Tiwwue that transmits electrical impulses throughought the body. ( spinal cord, peripheral nerves)
structure made up of 2 or more kinds of tissue organized to perform a more complex function.
Group of organs arranged to perform a more complex function than can any one organ alone. 11 major systems
Connects bones with Muscle
- 7- cervical
- 12- thoracic
- 5- lumbar
- 5- sacral ( 5 fused)
- 4 or 5- coccyx
- protects vital organs in the thorax
- prevents collapse of the thorax during respiration.
Consists of the bones of extremities
Every bone connects to at least one other bone except?
3 Major classifications of joints?
- Synovial- Contain synovial fluid allows movement between articulation bones accounts for most joings of appendiculat skeleton.
Primary functions of the skeletal system?
- postural maintenance
- heat protection
Voluntary muscle- found through the body
limited to the heart
Involvuntary muscles. intestines and surrounds blood vessles.
What is the difference between Sensory nerves and Motor nerves?
- Sensory- voluntary
- Motor - Involuntay
Organ of the Parasympotetic nervous system?
Central nervous system?
Bran spinal cord
Peripheral nervous system?
Collects info from both inside and outside the body. Relays info by AFFERENT fibers to the CNS and EFFERENT fibers from CNS to rest of body
Pia matter- arachnoid-dura- skull ( meningeal coverings of the brain and spinal cord.
Refers to skin surface area suppled by a single spinal nerve
Hormone given off by Parasympathetic nervous system?
Organ and hormones of the sympothetic nervous system?
Thoracis and lumber ganglia- Epinephrine and norepinephrine- alpha and beta receptors
olfactory sense organs?
Receptors lie in the mucosa and upper part of the nasal cavity. Nerve impulses interpreted by the brain as specific odors.
Bodies messenger system
Dissolved in blood plasma and quickly distributed throughout the body.
Secrete hormones directly into the circulatory system.
What does your adrenal glad secrete?
spinephrine and norepinephrine- sympotetic nervous system
what does your pancreas secrete ?( islets of langerhans)
insulin and glucagon
exocrine glads ( out)
secrete substances such as sweat, saliva, tears mucus ect. pushing "stuff" out of the bloodstream.
- Chemoreceptors respond to chemical stimuli
- Barareceptors respond to pressure changes
- alpha and beta receptors - neaurotransmitters and meds
Building up( anabolism) and breaking down ( catabolism) of biochems substances and produce energy.
fibrous sac surrounding the heart.
inside layer of the heart
Where is the heart located?
located in the mediastinum of the thoracic cavity 2/3 of the hearts mass lies in left sternum
Blood flow coming from the right ventrical goes to?
What veins does blood enter the heart from?
Blood enters heart at Pul veins into Left ven 1st- passes through left atrium into left ventrical and then into aotra. from aorta blood is pumped throughout the body.
Point of bifurcation of the trachea?
Ventilation is what kind of movement?
what is the correct order for airway?
Directly covers the lungs
Normal site for fetal developement?
Where does the majority of the exchage of materials happen?
where does 2/3 of the heart lay?
What are Fibrolitics?
Meds to break apart clots
define arteriovenous anastomoses ( av Stunts)
Allows blood to flow from ateries to veins without passing through capillaries
Which way to veins flow?
Into the heart
which way to arteries flow?
away from the heart
Structures located above the glottis
Begins at uvula and extends down into the apiglottis opens into the oral cavity
Upper airway ends where?