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Nightingale Phys

Week 1-6 content

To accomplish self-regulation, a highly complex and integrated communication control system or network is required. This type of network is called a(n) feedback control loop
The impact of effector activity on sensors may be positive or negative. Therefore, homeostatic control mechanisms are categorized as organs that are directly influenced by physiological variables or mechanisms.
Which level of control operates at the cell level, often using genes and enzymes to regulate cell function? intracellular regulation
The concept that information may flow ahead to another process to trigger a change in anticipation of an event that will follow is called feed-forward
Events that lead to an immune response to an infection or the formation of a blood clot are examples of positive feedback
Many complex processes of the body are coordinated at many levels. These include intracellular, intrinsic, extrinsic
What term describes a signal traveling toward a particular center or point of reference? afferent
Negative-feedback control systems: oppose a change
When two amino acids are joined, a peptide bond is formed and an H+ ion is released. False
What term is often used to describe certain arrangements of atoms attached to the carbon core of many organic molecules? functional group
Which of these is not a lipid? polysaccharide
Any large molecule made up of many identical small molecules is called a(n) polymer
A saturated fatty acid is one in which all available bonds of its hydrocarbon chain are filled
Which term means “water loving” and applies to the phospholipid head? hydrophilic
Proteins are polymers of amino acids
The carbon-containing molecules formed by living things are often called organic molecules
In which stage of mitosis do chromosomes move to the opposite ends of the cells along the spindle fibers? anaphase
Water pressure that develops in a solution as a result of osmosis into that solution is called _____ pressure. osmotic
The component that distinguishes one nucleotide from another is the nitrogen base
Diffusion moves down a concentration gradient
Transcription can best be described as the synthesis of mRNA
A chemical that reduces the amount of activation energy needed to start a chemical reaction is a(n) catalyst
Meiosis is called “reduction division” because the number of chromosomes is reduced by half
Replication of DNA occurs in which phase of interphase? S phase
Meiotic division occurs in primitive sex cells
RNA makes proteins by translation
The two processes of protein synthesis are transcription and translation
Which of the following is not a characteristic of meiosis? two haploid gametes
The result of meiosis is four daughter cells that are haploid
Which skin layer has cells that look prickly because of the desmosomes that join the cells together? Stratum spinosum
The hair papilla consists of _____ tissue. dermal
Smooth muscles that produce goose pimples when they contract are the _____ muscles. arrector pili
Hair: alternates between periods of growth and rest, consists of keratinized cells, is formed from cells of the germinal matrix
Which cells of the skin are filled with a tough, fibrous protein and account for most of the epidermal cells of the skin? Keratinocytes
Which skin layer contains closely packed, clear cells that contain a gel-like substance called eleidin? Stratum lucidum
What is are the two types/functions of bone marrow? Red & yellow – produces red blood cells and stores energy as fat.
Bones grow due to activity in the Epiphyseal plates
When an astronaut is in space for 2 months what may happen to their bone density as compared to a person living on earth? The astronaut will experience bone loss at an increased rate as a person on earth
Select the answer that best describes the axial skeletal structure. Provides framework for muscles that anchor and stabilize the appendicular bones
Which function of the skeletal system would be especially important if you were in a car accident? protection of internal organs
Which of the following provide flexibility and smooth surfaces for movement? Cartilages
The shoulder joint is an example of a _____ joint. The shoulder joint is an example of all of these
The joint present during the growth years between the epiphyses of a long bone and its diaphysis is the synchrondrosis
Which type of movement occurs between the carpal and tarsal bones and between the articular facets of adjoining spinal vertebrae? gliding
Synarthrotic joints are immovable
The contractile unit of a muscle cell is the sarcomere
A contraction in which muscle length remains the same but muscle tension increases is called an isometric contraction
Which of the following is not among the structures that characterize synovial joints? tendons
Three phases of the twitch contraction are the latent period, contraction phase, and relaxation phase
Which of the following is not a function of muscles? storage
The more muscle fibers contracting at the same time, the stronger the contraction of the entire muscle. The number of muscle fibers contracting depends on how many motor units are recruited
The largest and most commonly injured joint in the body is the _____ joint. knee
The four kinds of protein that make up myofilaments are myosin, actin, tropomyosin, and troponin
Created by: Spencer_Ramos
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