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The lymphatic system is responsible for returning blood loss from the capillaries to circulation
A single cardiac cycle is the period between the start of the right atrium contracting to the end of the left atrium contraction
hormone whose levels remain high when the body is suffering from inflammation and stress is:
If you were cast upon a desert island with no fresh water to drink, which of the following would increase in your bloodstream in an effort to conserve water?
Which gland could be called the "master gland" because of the extent of its effects on the body?
The primary purpose of the endocrine system is to:
maintain a relatively constant internal environment.
Food and drink are prevented from entering the respiratory passageways during swallowing by means of the:
What is the proper sequence of air flow in the human respiratory system?
nasal cavities, pharynx, larynx, trachea, bronchi
physically and mechanically breaks up the food, aids in forming the food into a consistency suitable for swallowing, increases the surface area of food exposed to digestive enzymes, actually mixes some enzymes with the food
are muscles in circular arrangement, prevent backflow, are smooth muscles, are found at the beginning and end of the stomach.
If the motor cortex on the right side of the brain is destroyed by a stroke, what would be impaired?
movement by the left side of the body
A deterioration in the myelin sheaths of motor axons to the lower leg would be expected to:
slow the rate of transmission and cause lack of motor control.
Saltatory ("jumping") conduction:
involves both a quicker type of nerve conduction and the movement of impulses from node to node
The myelin sheath:
is formed by the Schwann cell, speeds up the transmission of impulses, does not surround all nerves, extends from node to node.
metabolically support other neurons, form sheaths around neurons and control the rate of impulse transmission, form more than half of the volume of the brain, provide physical support.
cross bridges of muscle filaments are broken and reformed, ATP is used, muscle cells use glycogen, if poor supply of oxygen, then lead to fatigue.
During muscle contractions:
The myofibrils shorten, the actin and myosin filaments slide over each other, the actin filaments move toward the middle of the sacromere during contraction and away on relaxation, the muscle thickens.
Functions and properties of the axial skeleton include all of the following except ________.
supports and protects abdominopelvic organs, contains special sense organs, attachment sites for muscle used in respiration, contains joints reinforced with ligaments
E) contains tarsals and metatarsals
All of the following are functions of the bony skeleton except ______.
production of blood cells, support and protection, transmission of muscular forces by acting as levers
C) storage of vitamins
The inflammatory response involves ________________: release of chemical alarm signals
Increasing human body temperature, i.e. causing a fever, assists the immune system because:
pathogenic bacteria do not grow well at high temperatures
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