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Lillianna

Week 1-6

QuestionAnswer
What are circadian cycles? How the body naturally changes some set points to different values at different times of the day.
Because negative feedback control systems oppose changes that are opposite in direction to the initial disturbance, they are Passive
The impact of effector activity on sensors may be positive or negative. Therefore, homeostatic control mechanisms are categorized as Active or passive feedback systems
A saturated fatty acid is one in which one or more double bonds in its hydrocarbon chain are saturated with hydrogen atoms
T/F: A triglyceride is composed of a glycerol molecule and three of the same type of fatty acid. False
Osmosis can be defined as the net movement of water molecules from a region of lower solute concentration to a region of higher solute concentration
What does diffusion require? A concentration gradient
Which skin layer does the process of keratinization begin? Stratum granulosum
Which skin layer is called the barrier area? Stratum corneum
How can you best describe the axial skeletal structure? It provides framework for muscles that anchor and stabilize the appendicular bones
T/F: The anterior and posterior fontanelles allow for overlapping of the skull bones to DECREASE the diameter of the fetal head at birth True
T/F: The fontanelle closes at about 3 years of age. False, it closes at 2 years of age
Does the fontanelles allow for brain growth? Yes
What is an isometric contraction? A contraction in which muscle length remains the same b ut muscle tension increases
The shoulder is an example of what type of joint? Ball and socket
Are there striations in smooth muscle? NO
T/F There are no T-tubules in smooth muscles True
T/F The sarcoplasmic reticula is tightly organized in the smooth muscles. False; it is LOOSELY organized in the sarcoplasmic reticula
Created by: lilliannalidia
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