Anterior pituitary and released by the posterior pituitary
Hypothalamus u s and released by the posterior pituitary
Pituitary and signal to the hypothalamus
Hypothalamus and signal to the brain
Pituitary and signal to the reproductive organs
The environment imposes identical problems regardless of where the animals are found.
The development of the specialized structures in an animal is influenced by the animal’s ability to learn.
The simplest animals are those with the most recent appearance among the biota.
They permit adjustments to a wide range of environmental changes.
The most complex animals are the ones with the most ancient evolutionary origin.
There is a decrease in the surface-to-volume ratio.
Reproduction becomes limited to terrestrial environments.
There is greater variability in metabolic rate.
Migration to tropical areas becomes necessary for thermoregulation.
It becomes more difficult to conserve body warmth in cold environments.
Within the nucleus
In the cytoplasm of non-target cells
In the bloodstream
On the cell’s plasma membrane
Let down of milk from mammary tissues
Uterine contractions during birth
Water conservation by the kidney
Production of somatomedins by the liver
Production of enkephalins by the hypothalamus
The fluid inside the gastrovascular cavity of Hydra
The internal environment inside animal cells
Identical to the composition of blood.
The route for the exchange of materials between blood and body cells
Found only in the lumen of the small intestine
During birth, the baby’s head presses against the cervix and stretches it; stretch of the cervix stimulates the release of oxytocin; oxytocin causes contractions of muscles in the uterus; this pushes the baby against the cervix harder, increasing the stretch of the cervix.
Loss of water through perspiration while hiking in the desert decreases the amount of water in the blood decreased levels of water in the blood stimulate the release of ADH from the posterior pituitary; ADH causes the kidneys to reabsorb water from the urine; blood levels of blood increase; levels of ADH decrease.
Four hours after lunch blood glucose levels start falling; low blood glucose levels stimulate the release of glucagon, glucagon causes the liver to break down glycogen into glucose and release it into the blood;blood glucose levels rise; no more glucagon is released.
None of the above is an example of a positive feedback system.
Endocrine glands, such as the thyroid gland
Individual cells, such as those lining portions of the digestive tract.
Exocrine glands, such as the pancreas.
Both a and b
All of the above
Anterior pituitary and released by the posterior pituitary.
Hypothalamus and released by the posterior pituitary.
Pituitary and signal to the hypothalamus.
Hypothalamus and signal to the brain.
Simp1e squamous epithelium.
Simple cuboidal epithelium.
Simple columnar epithelium.
Pseudostratified ciliated columnar epithelium.
Stratified squamous epithelium.
Negative feedback typically regulates hormone secretion
The circulating level of a hormone is held constant through a series of positive feedback loops
Both lipid-soluble hormones and water-soluble hormones bind to intracellular protein receptors
Endocrine organs release their contents into the bloodstream via specialized ducts
It is impossible to also have neural regulation of that system
Loose connective tissue
Heart and lungs
Autonomic nervous system
Slower than steroid hormones
Related to the molecular size of the hormone
About the same as steroid hormones
More rapid than steroid hormones
Ingestion of a high fat meal
Increased blood glucose concentration
Activation of the sympathetic nervous system
Decreased blood glucose concentration
None of the above
The exchange of cytosol between the cells.
A direct electrical connection between the cells.
The release of chemical signals by the cell sending the message.
The exchange of DNA between the cells.
The movement of the cells.
Rates of heat loss to the environment
Rates of heat production in any environment
Skeletal muscle tension