Discuss how the nervous system is involved in the regulation of heart rate. What will be an ideal response?
Concepts to Consider: Both the medulla and the hypothalamus are involved. The medulla
contains cardiac centers that connect to the SA node via the sympathetic and parasympathetic
divisions of the autonomic nervous system. The sympathetic nerves release norepinephrine,
which increases heart rate. The parasympathetic nerves release acetylcholine, which acts in
the opposite way. The hypothalamus responds to stress by stimulating release of epinephrine
and norepinephrine from the adrenal glands. These hormones increase heart rate.
You might also like to view...
Despite being called the reverse citric acid cycle, it is currently identified as the most ancient autotrophic pathway
Indicate whether the statement is true or false.
Most of the oligotrophic proteobacteria are found in the ________.
A. beta proteobacteria B. delta proteobacteria C. gamma proteobacteria D. alpha proteobacteria
Which of the following describes a lophophore, which is a feature possessed by all members of the phyla Ectoprocta, Brachipoda, and Phoronida?
a. a rounded fold with one or two rows of hollow, ciliated tentacles b. an outpocket of the digestive tract, where metabolic wastes are processed before emptying into the digestive tract for expulsion c. a cluster of pores along the aboral surface, used for expelling wastes from the digestive tract d. an extra body cavity surrounding the digestive tract, filled with muscles used for locomotion
Which statement regarding science technology is FALSE?
What will be an ideal response?