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Study Stack 2
Content covered in weeks 6-12.
What is the contractile unit of muscle fibers? | Sarcomere |
What is the neurotransmitter released into the synaptic cleft that diffuses across the gap, stimulates the receptors, and initiates an impulse in the sarcolemma? | Acetylcholine |
Waht are the two functional divisions of the peripheral nervous system (PNS)? | 1.) Afferent (sensory) division 2. Efferent (motor) division |
What type of hormones target other endocrine glands and stimulate their growth and secretion? | Tropic hormones |
What type of hormone is synthesized from cholesterol? | Steroid hormones |
What typer of hormone is synthesized primarily from amino acids? | Nonsteroid hormones |
What is the purpose of glucagon hormone? | Produced by alpha cells; tends to increase blood glucose levels; stimulates gluconeogenesis in liver cells. |
What is the purpose of insulin hormone? | Produced by beta cells; lowers blood concentration of glucose, amino acids, and fatty acids and promotes their metabolism by tissue cells |
What is ejection fraction (EF)? | The ratio of stroke volume (SV) to end-diastolic volume (EDV) |
What is afterload? | The pumping work that the heart must do to push blood into the arteries. |
What are the main functions of lymph nodes? | Defense through filtration and hematopoiesis for the final stages of maturation of some lymphocytes and monocytes. |
What is the main function of alveoli? | Exchange gas. |
Where is the olfactory epithelium—special sensory membrane containing many olfactory nerve cells and a rich lymphatic plexus found? | Nasal mucosa |