Anatomy Final Review Kahoot PDF

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in-class review...

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Recieves a stimulus and causes nerve impulses to be generated in sensory neurons o Receptors SENSORY RECEPTORS THROUGHOUT THE BODY ARE LINKED TO NEURONS THAT ULTIMATELY SEND IMPULSES TO o PARIETAL LOBE o I don’t know why this question was all capitalized disregard Both smell and taste receptors respond to chemicals therefore are known as o Chemoreceptors Receptors that detect odors are located in o Upper part of the nasal cavity Sound is amplified by the parts of the middle ear. When the stapes vibrate the __ will vibrate. o Oval window When a sound wave first arrives to the ear the wave is directed toward the auditory canal by o the auricle/pinna What part of the eye is continuous with the cornea and forms the outer part of the back of the eye o Sclera Which of the following strcutures of the eye would vitreous humor come in contact with? o Retina o Retinal detachment can occur when it detaches and vitreous humor gets behind it The blind spot is associated with o Optic disk Which of the following occurs when bright light hits the eye? o The pupil decreases in size What structure regulates the amount of light passing to the visual receptors of the eye? o Iris Which of the following conditions results when the transparency of the lens decreases? o Cataracts What is the main function of the rods in the eye? o Vision in dim light o Rods are more sensitive to light than cones Color blindness usually results from a decrease in the number of o Cones Which of the following types of neurons are replaced throughout adult life? o Olfactory receptor cells LASIK treatment functions to improve eyesight by o Changing the shape of the cornea Stronger stimuli actovate receptors and trigger a greater strength of action potentials o False

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o Changes the frequency of action potentials, not strength In the retina, axons of the photoreceptor cells become the optic nerve o True In order for muscle contraction to occur, cross-bridges must form between o Actin and myosin T, or transverse, tubes in skeletal muscle function to o Promote electrical impulse to travel deep into the cell o Know what each one is and what they do o SR store calcium o T tubes are inpocketing of membrane o They get the action potential released all throughout cell In which of the following would you expect to find motor units made up of very few muscle cells? o Eye muscles o Motorneuron in all those muscle cells inervate o Small motor unit allows for fine muscle control What is responsible for the striated appearance of a skeletal muscle cell? o The arrangement of myofilaments o Thick filaments made up of myosin; thin made up of actin o Know Names of bands of striations What stores calcium o Sarcoplasmic reticulum o Cystoplasm muscle cells; very low in calcium o Has to pump all of calcium out to SR Which of following is characteristic of cardiac and smoorth muscle but not skeletal o Presence of gap junctions The oxygen-binding protein found in muscle cells is o Myoglobin What is the functional unit of a skeletal muscled called? o Sarcomere o All shortening adds up and can cause shrinking In skeletal muscle, potassium ions are stored in the sarcoplasmic reticulum o False During a muscle contraction, myosin pulls actin filaments towards the center of a sarcomere o True o Actin and mysosin move towards center of sarcomere Muscles can constitute nearly have of our body mass o True The head of the myosin molecules contact the actin filaments when a muscle is relaxed o False o Happens when mucle is contracted

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A resting potential is caused by a difference in concentration of ions inside and outside of the cell o True The muscle cell contracts, the A bands diminish in size, but the I bands don’t change the length o False o A bands are thick filaments? o I bands find actin protein; actin slides in A band and appear to be getting smaller o Actin and myosin don’t shrink they just slide on top What protein would you find in the “I” bands of a sarcomere? o Actin only The toxin TTX found in the pufferfish by interfering with o Sodium channels o If you eat badly prepared pufferfish it can kill you What contributes to relaxation of muscle after a normal contraction? o Acetylcholinesterase...