Sophia Human Biology Milestone 3 new practice questions and answers docs solved and approved docs (all correct) 2021

Sophia Human Biology Milestone 3 new practice questions and answers docs solved and approved docs (all correct) 2021 1 Which of these is TRUE of a neuron at resting potential? The neuron has more positive charges inside than outside. The neuron has more potassium ions inside than outside. Sodium-potassium pumps transport potassium ions out of the neuron. Sodium-potassium pumps transport sodium ions into the neuron. CONCEPT Membrane Potential and Action Potential 2 Which structure of the ear monitors movement and equilibrium via its semicircular canals and two fluid-filled sacs? Tectorial membrane Organ of Corti Cochlea Vestibular apparatus CONCEPT Ear Anatomy and Hearing 3 Which lobe of the brain is responsible for vision? Frontal lobe Temporal lobe Occipital lobe Parietal lobe CONCEPT Forebrain and Its Cerebrum 4 What triggers an action potential? A neurotransmitter An exciting signal An inhibiting signal A synapse CONCEPT Neurotransmitters 5 What parts of the mouth contain taste receptors? Tongue and throat Tongue and roof of the mouth Throat and roof of the mouth Tongue, throat and roof of the mouth CONCEPT Smell & Taste 6 Parkinson’s disease is caused by __________. the breakdown of neurons, affecting neurotransmitter production an injury to the spinal cord an injury in the peripheral nervous system a viral infection that affects various parts of the brain CONCEPT Nervous System Health and Disorders 7 Amy meets her new coworker for the first time and realizes they went to high school together. Which type of receptor most likely allowed for this realization? Osmoreceptor Nociceptor Thermoreceptor Photoreceptor CONCEPT Sensory Receptors 8 In the future, spinal cord injuries and diseases like Parkinson's may be treated with _________. Schwann cells mechanoreceptors chemoreceptors stem cells CONCEPT Stem Cells 9 Which nerves are mostly involved in pupil dilation and other "fight-or-flight" responses? Sympathetic Autonomic Parasympathetic Somatic CONCEPT Central And Peripheral Nervous System 10 Which ear disorder occurs when movement over-stimulates the hair cells found in the inner ear? Tinnitus Vertigo Otis media Motion sickness CONCEPT Disorders of the Ear 11 Which part of the eye does light enter through? Iris Retina Fovea Pupil CONCEPT Vision 12 What is the cerebral spinal fluid's primary role? Washing the brain of metabolic waste Keeping an adequate amount of blood flowing into the brain Connecting the brain to the skull Preventing viruses, toxins and bacteria from entering the brain's blood supply CONCEPT The Brain 13 Which eye disorder has the following characteristics? Eyeball is wider than it is tall. Images focus in front of the retina rather than on it. Myopia Hyperopia Glaucoma Retinoblastoma CONCEPT Disorders of the Eye 14 Which part of the neuron receives signals from other neurons? Axon endings Trigger zone Conducting zone Dendrites CONCEPT Neurons 15 The _______ is the part of the brain that controls voluntary movements, while the ______ helps regulate activities that we do not control, including breathing and heartbeat. medulla oblongata; pons midbrain; hindbrain cerebellum; cerebrum cerebellum; medulla oblongata CONCEPT Hindbrain and Midbrain 16 What are glial cells? A group or mass of neuron cells Cells found only in the central nervous system Cells that nourish and support neurons A bundle of neuron axons CONCEPT Nerves as Information Pathways 17 Which area of the brain receives information collected from mechanoreceptors? Pons Medulla Somatosensory cortex Olfactory lobe CONCEPT Somatic Sense