- Study guides, Class notes & Summaries

1. What is the function of the endocrine system? To regulate hormones, metabolism, growth, tissue function 2. Research two types of hormones and describe the mode of action for each. Insulin and thyroxine. Insulin is produced by the pancres and regulates blood sugar levels. Thyroine is produced by thyroid gland and regulates metabolism, frowth and development 3. Which gland is both endocrine and exocrine? Pancreas 4. Which hormones control the fight or flight response? Epine...

1. What is the primary function of the nervous system? The nervous system is the master control and communication center. It maintains homeostasis within the body and allows to interpret, integrate, and react to surounding environment and internal stimuli. 2. Why does the cerebral cortex contain so many folds? To help increase surface area and to create more space for information processing. 3. What is a nerve impulse? The way cells communicate from one to the other by sending an electi...

1. How do banding patterns change when a muscle contracts? the length of the band does not change during contraction of the muscles. However, the width of the banding pattern changes as the degree of overlap changes and results in shortening in the band. 2. What is the difference between a muscle organ, a muscle fiber, myofibril and a myofilament? Muscle fiber is a single muscle cell. Myofibrils are long and cylindrical that are found within the fiber. Myofilaments are the protein filament...

1. List the functions of the skeletal system. Support and shape to the body, enabling movemebt by acting as levers for muscles, protecting delecate organs like brain and heart, producing blood cells and bone morrow, storing essential minerals like calcium and phosphorus, regulating endocrine hormones 2. What material contributes the greatest to the compressive strength of bone? The mineral that contributes the most to the compressive strength of bone is hydroxyapatite. 3. Briefly desc...

1. What is a tissue? A group of cells that have similar structure and function together as one. 2. What is the function of epithelial tissue? Serves as protection, secretion, absorption, excretion, filtration, and sensory reception. They act as bariers, linings, and coverings, playing a crucial role in maintaining homeostasis. 3. What is the function of connective tissue? Connective tissue provides support, connects, and binds other tissues and organs in the body. It protects organs, so...

1. Define the following terms. a. hypertonic solution: A solution that has a higher concentration of solutes than another solution. Found typically in a cell or body fluid. b. hypotonic solution: Solution that has a lower concentration of solutes compared to another solution. Found in internal cellular fluid or blood. c. isotonic solution: Solution that has the same concentration of solutes as cells and blood preventing cells from shrinking or swelling 2. Define osmotic pressu...

1. What are chromosomes made of? Chromosomes are make of DNA and proteins 2. Compare and contrast mitosis and meiosis, ensuring to detail the differences in both function and in process. (Hint: Your response should be 4-5 sentences long.) Miosis prouces two identical diploid cells for growth and repair, meiosis produces for unique haploid cells for sexual reproduction. The function of mitosis focuses on growth, repair, and asexual reproduction, where in meiosis it is for sexual reproductio...

1. Identify the major similarities and differences between prokaryotic and eukaryotic cells. Prokaryotic cells are found in bacteria and archaea where Eukaryotic cells are found in plants, animals, fungi and protists. Prokaryotic cells are a more simple structure whereas Eukaryotic cells are more complex. With prokaryotic cells, there is no nucleus or membrane bound organelles, however eukaryotic cells do. Prokaryotic cells are also smaller than eukaryotic cells. They are both similar in the sen...

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