Biol 252 exam - Study guides, Class notes & Summaries

What do you think would happen if the elastic fibers in tissues were distensible but not elastic? - ANSWER This would cause the tissues to be unable to resume their original shape and size once the stretching forces were removed. Predict what would happen if the tight junctions in blood vessels were not functional. - ANSWER Tight junctions make the spaces between the cells relatively impermeable to water and many solutes. Nonfunctional tight junctions in blood vessels would allow much of the ...

Function follows _____________ - ANSWER Form Afferent = - ANSWER Sensory Efferent = - ANSWER Motor Two divisions of the sensory nervous system: - ANSWER Somatic and visceral What does the somatic nervous system control? - ANSWER skin, skeletal muscles, joints What does the visceral nervous system control? - ANSWER smooth muscle, cardiac muscle, glands, organs two divisions of motor division - ANSWER somatic nervous system and autonomic nervous system T/F: As the stomach expa...

BIOL 252 Exam 1 Study Guide with Complete Solutions Central Nervous System - Ans:-"general" of the body; integration of sensory input and origin of motor responses • brain • spinal cord Peripheral Nervous System - Ans:-body; sensory input and motor output • nerves • sensory receptors • motor neurons sensory receptors - Ans:-Afferent neurons → Admit signals differentiated based on location ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTO...

Using the example of membrane polarization, the concentration gradient of potassium is ___________ and the electrical gradient for cation movement is ______________. - ANSWER out of the cell. . . . . .. into the cell. In general, negative feedback loops best correlate with - ANSWER mechanisms to maintain homeostasis The simplest level of organization that is considered to be "living" is the: - ANSWER cell _____________ may be important for body functions, but is also associated with d...

Liver -Correct Answer produces bile for fat emulsion pancreas -Correct Answer produces digestive enzymes. Accessory organ of the digestive system that is both an endocrine and exocrine gland components of bile -Correct Answer minerals, bile pigments, bile acids (salts), phospholipids, cholesterol hepatic sinusoids -Correct Answer blood filled channels between the layers of hepatocytes in the liver chymotrypsin and trypsin -Correct Answer pancreatic enzymes that digest proteins hep...

chondrocytes - ANSWER cartilage cell tension - ANSWER force needed to stretch or change something compression - ANSWER to press or squeeze together torsion - ANSWER the twisting of a bodily organ

CNS - ANSWER consists of the brain and spinal cord; processes information and determines if and how the body should respond by issuing commands to muscle and gland cells PNS - ANSWER a subdivision of the nervous system that is composed of all nerves and ganglia; divided into sensory and motor divisions Sensory (afferent) - ANSWER specialized neurons that detect stimulus (light, heat, pressure, and chemicals) and transmit information about them to the CNS motor (efferent) - ANSWER neuron...

Myocyte Muscle cell Sarcolemma Plasma membrane of myocyte Sarcoplasm Cytoplasm of myocyte Myofibril Tightly packed filament bundles found within skeletal muscle fibers. Contractional unit of a muscle cell. Sarcoplasmic reticulum Site of calcium storage in a muscle cell. Surrounds the myofibrils Transverse tubules (T-tubule) Inward extensions of the sarcolemma that dive into the muscle fiber and surround each myofibril to form a tunnel-like network within the muscle fiber Terminal cisternae...

Epimysium - ANSWER Connective tissue layer surrounding muscle organ Fasicles - ANSWER Muscular subunits that contain muscle cells. Coated by parimysium Muscle Cell - ANSWER Coated by endomysium Sarcolemma - ANSWER muscle cell cytoplasm Unique characteristics of muscle cells - ANSWER High concentration of mitochondria, multiple nuclei, sarcoplasmic reticulum, t-tubules, and myofibrils Sarcoplasmic Reticulum - ANSWER ER that covers the myofibrils

astrocytes - ANSWER support and brace neurons and blood vessels, regulate ECF environment of CNS, formation of blood brain barrier, and repair damaged brain tissue oligodendrocytes - ANSWER insulator of CNS neurons- myelinates neurons microglia - ANSWER "immune cells" of CNS; clean up environment acting as wandering phagocytes ependymal cells - ANSWER ciliated epithelial cells that circulate cerebrospinal fluid schwann cells - ANSWER myelinate neurons of the PNS and repair damaged ...