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test 4 organismal
Terms in this set (45)
Which structure stores feces until they can be eliminated?
The point of connection between two communication neurons is called the __________
When contracted, __________ prevents movement of chyme from the stomach to the small intestine.
One function of this organ system is __________
exchange of gases between the blood and air
Bile from the liver is stored in the __________ before entering the intestine.
Digestion is __________
The breakdown of food into small nutrient molecules that the body can absorb.
The __________ is the control center of the nervous system.
Central nervous system
Vitamins are __________
Organic molecules that are required in the diet in very small amounts.
In a human, the __________ provide(s) a common passageway for both food and air.
How many amino acids are essential to human health?
Common in newborns, this condition of the liver causes the skin to turn yellow. What is it?
What is the epiglottis?
A flap that flips down to cover the entry to the trachea during swallowing.
Together, inhalation and exhalation are referred to as __________
The first few inches of small intestine where digestion mostly takes place is called the __________
which part of the body comprise the central envois system (CNS)?
Both brain and spinal cord
Ventilation includes __________
Both inspiration and expiration
The small intestines are lined with small ridges, which increase surface area for nutrient absorption. They are called _________
To allow rapid diffusion between the body and the environment, gas exchange requires a surface that is both __________
Thin and moist
The rhythmic muscular action that moves food through the digestive system is called _________
Human teeth show that we are actually __________, which means we have a plant and meat-based diet.
In the human respiratory system, gas exchange occurs across the cells of the __________.
Fiber helps regulate cholesterol and bile as it passes through the small intestine.
the main function of salivary is to __________
Break down starch
Breathing is regulated by __________.
Control systems in the brain stem
What is the main digestive function of the pancreas?
It produces digestive enzymes and neutralizes stomach acids.
During breathing in humans, __________.
The diaphragm moves downward and the rib muscles contract, increasing the size of the chest cavity and decreasing the air pressure within the chest cavity.
The stomach mixes food with the secretions of the stomach wall to form _________.
the tongue does all of the following EXCEPT __________.
the basic unit of nervous tissue is the __________.
which of the following choices lists the organs of the human alimentary canal in the CORRECT order?
Oral cavity, pharynx, esophagus, stomach, small intestine, large intestine.
Someone with liver failure will, in particular, have problems with the digestive and absorption of __________.
When you hold your breath, which changes in one of more blood gases leads initially to the urge to breathe again?
Rising carbon dioxide level
Breathing rhythm is controlled by what part of the brain?
Pneumonia is a disorder of the longs where __________
Viral, bacteria, or fungal infection of the lungs in which bronchi and alveoli fill with fluid.
What are estuaries?
Transition areas between a river and the ocean
What level of ecology is concerned with groups of individuals of the same species?
Which of the following is abiotic?
Which nutrients often limit the distribution and abundance of photosynthetic organisms?
Nitrogen and phosphorus
In the aquatic ecosystem, what name is given to the region where photosynthesis can occur?
Long, snowy winters as well as evergreen trees such as pine and fir are found in __________.
Permafrost, or permanently frozen subsoil, characterizes __________.
Which of these biomes are maintained by fire?
Chaparral and savannas
ecology is the study of __________.
Interactions between organisms and their environments.
The Sahara Desert and the Negev Desert belong to the same ___________.
Which part of Earth receives the greatest intensity of solar radiation?
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