BIO183 Exam Pt. 3

• What is ovulation?

  The release of a mature egg from the ovary
• What are the 2 phases involved in the menstrual cycle?

  Follicular and luteal phase
• How long does the follicular phase last for?

  The follicular phase beings on day 1 of a 28 day menstural cycle and ends on day 14
• How long does the luteal phase last for?

  The luteal phase beings after ovulation on day 15 and lasts until the start of a new menstural cycle.
• T or F: During muscle contraction, the thick filament myosin shortens.

  False
• What are the masterminds of the menstural cycle?

  The hypothalamus and the pituitary gland
• How many lens are found in the eyes of vertebrates?

  1
• What ring of muscle controls the pupil?

  Iris
• _ is the name of the unit that actually shortens during muscle contractions.

  Sarcomere
• A physiologist is studying the homeostatic control of blood pH. What type of receptor is most likely responsible for detecting changes in blood pH?

  Chemoreceptor
• What is the order of processing information?

  Stimulus, transduction, transmission, and perception
• The _ receives signals from other neurons

  Dendrites
• In which of the following locations would we expect to find the release of neurotransmitter molecules?

  Chemical synapse
• What does the myelin sheath do?

  Causes an action potentials speed to increase
• Countercurrent exchange in the fish gill helps to maximize _

  Diffusion
• Define synapse

  Junction between an axon and another cell
• What is an action potential?

  Changes in membrane potential / voltage
• What is resting potential?

  The membrane potential of a neuron not sending signals