01:119:116 Study Guide - Cervix, Oviduct, Oligodendrocyte

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anshikamkn

3 Apr 2023

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Document Summary

Plant physiology: cc plant tissue and tissue system, vascular tissue- phloem( moves sugars) and xylem (moves water, ground tissue- mesophyll cells and the leaves that are doing photosynthesis, dermal tissue- guard cells(regulate stomata), epidermis(cuticle on the outside), Homeostasis: seq and cc positive and negative feedback, negative feedback: starts with stimulus and works against the stimulus. Blood glucose, thyroid gland, temperature, calcium levels: positive feedback: amplifies the stimulus, causes a change, seq and h/d glucose homeostasis. Humans and mammals: thermoconformer: match the environment"s temperature. G-protein coupled receptor-> activate g-protein inside-> adenylyl cyclase-> camp-> activates protein kinases-> perform phosphorylation i. Slow and long lasting: cc endocrine and exocrine secretion i, endo: circulates throughout (ductless, exo: uses ducts. Endocrine system ll: cc, seq and h/d specific pathways, thyroid: hypothalamus-> trh(tropic) -> anterior pituitary -> tsh(tropic) -> Blood calcium goes up-> calcitonin released-> inhibit ca2+ release from bone and kidneys excrete ca2: adrenal medulla: short term stress( epinephrine/ adrenaline); stress-> hormone released-> flight/fight i.

Related Questions

What is the function of the phloem? Select one: a. Phloem carries nitrogenous wastes to the roots where the waste leaves the plant. b. Phloem carries water and minerals to the rest of the plant from the roots. c. Phloem carries water from the leaves to the rest of the plant. d.

Phloem transports sugar down from the leaves to the rest of the plant. How do the cells of the xylem compare to the cells of the phloem? Select one: a. The xylem cells have thin cell walls, whereas the phloem cells have thick cell walls. b. The xylem cells are large, whereas the phloem cells are small. c. The xylem cells have chloroplasts, whereas the phloem cells do not have chloroplasts. d.

The xylem cells are square, whereas the phloem cells are round. From which part of the stem tissue is wood made? Select one: a. spongy mesophyll b. the cuticle c. old layers of xylem and phloem d. central parenchyma Flat leaves lose water to the environment more readily than pine needles do.

Which statement describes a structural characteristic of flat leaves that accounts for this difference? Select one: a. Flat leaves have a thicker coating of waterproof wax. b. Flat leaves have more surface area. c. Flat leaves have a thicker epidermis. d. The stomata of flat leaves are sunken into the leaf.

1. Fill in the missing terms below.

In vascular plants, _________________ is the vascular tissue thattransports water, and

_________________ is the vascular tissue that transports water andsugar.

With respect to these two tissues, _________________ transportsfluids in one direction only (upwards), using no energy from theplant.

2. Water diffuses into root hairs through three pathways. List twoof these pathways.

3. Sugar is moved from sources to sinks. Fill in the blanksbelow.

An example of a sugar source is:

An example of a sugar sink is: