MASTERING BIO 253

MASTERING BIO 253 EXAMS: A+ GRADED GUIDE WITH LATEST QUESTIONS AND ANSWERS. Negative feedback - Most common in body - Effectors return conditions to normal - Shuts off when normal state is reached, counters/corrects something - Long-lived - Think furnace thermostat - BP, glucose, temp, hormones Positive feedback - Change is intensified, keeps stimulating until homeostasis is reached - Can produce unstable conditions in the beginning - Short-lived - Labor, blood clotting, sneezing An...

MASTERING BIO 253 EXAMS: A+ GRADED GUIDE WITH LATEST QUESTIONS AND ANSWERS. Within the skin, the ______ is the thicker layer composed primarily of connective tissue, while the ______ layer is composed of stratified squamous epithelium. dermis; epidermal Blood vessels are found in the ______, but not in the ______. dermis; epidermis What tissues are present within the subcutaneous layer? adipose tissue loose connective tissue Which of the following are included in the integumentary system...

MASTERING BIO 253 EXAMS: A+ GRADED GUIDE WITH LATEST QUESTIONS AND ANSWERS. Occipital lobe association areas analyze and combine visual images with other sensory experiences Insula translating sensory information into proper emotional responses Where in the brain are the motor areas located? primary motor areas: -frontal lobes -control voluntary muscles -most nerve fibers cross over in brainstem Broca's area: -anterior to primary motor cortex -usually in left hemisphere -contro...

MASTERING BIO 253 EXAMS: A+ GRADED GUIDE WITH LATEST QUESTIONS AND ANSWERS. Name two cell types in neural tissue. neurons and glia What are neurons? "rapid communicators," excitable cells that transmit electrical signals What are glia cells? "caregivers," cells that provide support for neurons Name two groups of nervous system organs. Central Nervous System (CNS) and Peripheral Nervous System (PNS) List the general functions of the nervous system. sensory function: -nervou...

MASTERING BIO 253 EXAMS: A+ GRADED GUIDE WITH LATEST QUESTIONS AND ANSWERS. Cerebrum largest area of the brain; responsible for all voluntary activities of the body sulci shallow grooves that separate gyri gyri ridges of the brain corpus callosum a broad band of nerve fibers joining the two hemispheres of the brain. motor cortex an area at the rear of the frontal lobes that controls voluntary movements prefrontal cortex part of frontal lobe responsible for thinking, planning, and lan...

MASTERING BIO 253 EXAMS: A+ GRADED GUIDE WITH LATEST QUESTIONS AND ANSWERS. Dendrite What conducts impulses toward the cell body? Axon What conducts impulses away from the cell body? Dorsal root where do sensory fibers enter the spinal cord? ventral root where do the motor fibers enter the spinal cord? the base of the cerebrum where is the circle of willis located? peptidoglycan what is the cell wall of bacteria made of? protozoan, fungi, worms what is an example of a Eukaryote ba...

MASTERING BIO 253 EXAMS: A+ GRADED GUIDE WITH LATEST QUESTIONS AND ANSWERS. nose, larynx, pharynx what are the parts of the upper respiratory system? trachea, bronchi and lungs what are the parts of the lower respiratory system? to stop food from getting into the lungs what is the function of the epiglottis? larynx what is the epiglottis a part of? tidal volume TV What is the amount of air we breathe in and out during normal respiration? inspiratory reserve volume what is the largest...

MASTERING BIO 253 EXAMS: A+ GRADED GUIDE WITH LATEST QUESTIONS AND ANSWERS. Hyposmia reduced ability to smell odorant A molecule that can be detected by sensory receptors of the olfactory system. olfactory epithelium A mucous membrane at the top of the nasal cavity; contains columnar epithelial cells, olfactory receptor neurons and olfactory glands that produce mucous olfactory receptor cells bipolar neurons that bind to odorants, send signals to olfactory nerve fibers and bulb aguesi...

MASTERING BIO 253 EXAMS: A+ GRADED GUIDE WITH LATEST QUESTIONS AND ANSWERS. Ardiac output is increased by increasing which two factors stroke volume, heart rate Parasympathetic activity decreases nodal rate of depolarization by decreasing the ___ flow of calcium into the cytosol Which nerve provides parasympathetic supply to the heart vagus nerve What three things are equal between left and right ventricles cardiac output, heart rate, stroke volume The driving force for bulk flow is a...

MASTERING BIO 253 EXAMS: A+ GRADED GUIDE WITH LATEST QUESTIONS AND ANSWERS. In primary and secondary active transport, at least one substance will move against its concentration gradient The location of the binding sites on the Na-K pump dictates the _ of solute movement direction By which two modes of transport does glucose cross the cell membrane? SAT and facilitated diffusion Which transport processes can be saturated? anything with a protein Where is the Na/K ATPase found in the int...