Select the CORRECT statement: Selected a Electrical excitability (the ability to generate action potentials) first arose in multicellular organisms, as a byproduct of the need to have efficient, coordinated communication between cells. Answer: Answers: a. Electrical excitability (the ability to generate action potentials) first arose in multicellular organisms, as a byproduct of the need to have efficient, coordinated communication between cells. b. Drugs that prevent blood clot formation can be used to manage a patient who has suffered a hemorrhagic cerebrovascular accident, because these dugs limit the extent of brain damage. c. In a split brain patient (i.e. a patient in which the corpus collosum has been severed), visual stimuli presented to the right visual field can be verbalized (spoken). d. Statements (A) and (B) are correct and (C) is incorrect. e. Statements (A), (B) and (C) are all correct.

Below is a figure from a 2015 paper that characterizes the effect of venom from the spider Selenocosmia hainana on voltage-gated sodium channels. According to the I-V curve (current-voltage curve) in Figure panel B, what is the effect of the venom on voltage-gated sodium channels? Current is on the y-axis and voltage is on the x-axis during an action potential. The figure legend denotes the concentration of the venom being applied. A C rHNTX-IV (10 μM) -rHNTX-IV (100 nM) Control Control 5 nA 10 ms r 5 nA 10 ms rHNTX- IV (10 μM) B D -80 -80 -60 -60 A -40 -40 V (mv) -20 V(mv) -20 be TOLF 2-6 I (NA) -8 ON -12 10 -12 -14 -8 -10 (NA) Control 100 nM — 10 μΜ 40 -Control -- 10 μM 40

The reflex arc is the fastest way the body has to move a body part from danger or away from the source of pain. Have you ever noticed your own reflex response? Did you notice that you felt the pain after you yanked your hand away from the source of pain? Which is the sequence of structures involved in a reflex response? a. motor neurons → effectors → brain → sensory neurons → interneurons b. effectors → sensory neurons → brain → motor neurons c. sensory neurons → interneurons → motor neurons → effectors d. sensory neurons → motor neurons → interneurons → effectors

You have to identify the following:1. The negative feedback condition/mechanism2. The four components of a negative feedbackloop:A. stimulusB. sensorC. control centerD. effector3. Explain what would happen to eachcomponent if a secretion became too great.

Choose an important question related to the most modern and advanced blood pressure machines invented to address via prototyping such as” SPECIAL BLOOD PRESSURE MACHINE PRODUCT THAT IS A WIRELESS, REMOTE MONITORING DEVICE THAT CONNECTS TO A SMARTPHONE APP WITH ACCURATE. MEASUREMENTS”. Design a model and draw it with accompanying test(s). Construct a (more advanced) prototype and execute tests for it.

Extracellular Fluid Inactive Monomers Cytoplasm Dimerization Phosphorylation SATADP මලල 000 Inactive relay protein Activation Which of the following statements is true about the above diagram? Active relay protein the signal molecules bind to the inactive relay protein the active relay molecule will go directly to a cell and phosphorylate receptor protein molecules O the receptor protein molecules will be activated when they are phosphorylated the inactive monomers become activated by binding of the relay protein

Cancer cells have a complex interaction with the cells of the immune system that are present in the stroma. The immune cells have the potential to destroy the tumor if it is recognized as aberrant tissue. Which one of the following statements correctly describes an interaction between cancer cells and the immune cells of the stroma? A.  Tumors stimulate formation of new blood vessels—angiogenesis—promoting tumor survival. B.  The tumor establishes an immunosuppressive environment by blocking white-cell activation. C.  Tumors invoke an inflammatory reaction that blocks entry of immune cells into the stroma. D.  Immune cells block tumor growth by providing signals that inhibit cancer cell proliferation.

Which of the following is involved in signaling/communication during cellular processes: Select one: a. myostatin receptor b. all of the above c. RAS d. acetylcholine e. calcium Clear my choice

What happens in the tissues of this structure as a result of a lower than normal of plasma proteins in the concentration blood? Select one: a. Fluid is lost from the tissues due to a decrease in osmotic pressure. b. Fluid is lost from the tissues due to a decrease in blood pressure. c. Fluid accumulates in the tissues due to a decrease in blood pressure. d. Fluid accumulates in the tissues due to a decrease in osmotic pressure.