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Rueben Riley
Study Stack Set 1 Physiology Weeks 1- 6 review
| Question | Answer |
|---|---|
| The relatively constant state maintained by the body is known as | homeostasis |
| Because negative feedback control systems oppose changes that are opposite in direction to the initial disturbance, they are | slowed or maintained in the homeostatic range |
| 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. |
| Which of the following may put one at risk for developing a given disease | Environment, Stress, Lifestyle |
| The contraction of the uterus during the birth of a baby is an example of_____________feedback. | positive |
| Negative-feedback control systems: | oppose a change |
| The carbon-containing molecules formed by living things are often called | organic molecules |
| A very large molecule composed of subunits of sugar, a nitrogen base, and a phosphate bond is a | nucleic acid |
| The basic building blocks of fats are | fatty acids and glycerol |
| DNA: | is a double-helix strand of nucleotides |
| The element that is present in all proteins but not carbohydrates is: | nitrogen |
| Peptide bonds join together molecules of: | amino acids |
| Diffusion can be defined as | the net movement of molecules from a region of higher concentration to a region of lower concentration |
| Osmosis can be defined as | the net movement of water molecules from a region of lower concentration to a region of higher concentration |
| An individual's entire set of DNA can be referred to as a: | genome |
| The correct order of the phases of mitosis is: | prophase, metaphase, anaphase, telophase |
| What is true about the sodium and potassium pump? | Three sodium ions are taken out of the cell |
| IN which skin layer does the process of keratinization begin? | Stratum granulosum |
| Hair: | alternates between periods of growth; consists of keratinized cells; is formed from cells of the germinal matrix |
| Of the five epidermal cell layers, the only one that can undergo mitosis is the stratum: | basale |
| A tissue is: | A group of similar cells that perform a common function |
| Which tissue is most likely to form a keloid scar as it heals? | Connective |
| What is are the two types/functions of bone marrow? | Red & yellow - produces red blood cells and stores energy as fat. |
| The fontenelles of an infant's skull consists of | fibrous membrane |
| Calcification of the organic bone matrix occurs when | complex calcium salts are deposited in the matrix |
| Small cells that synthesize and secrete a specialized organic matrix are | osteoblasts. |
| The cell organelles that synthesize organic matrix substances in bone formation are: | endoplasmic reticulum and Golgi apparatus. |
| Bones grow in diameter by the combined action of which two of the three bone cell types | osteoblasts and osteoclasts |
| Bones act as a reservoir for which of the following minerals? | Calcium;Phosphorus |
| The minimal level of stimulation required to cause a fiber to contract is called the | threshold stimulus |
| The structure of the knee joint permits movements of | flexion and extension |
| The energy required for muscular contraction is obtained by hydrolysis of | ATP |
| The first event to occur in muscle relaxation is that: | the sarcoplasmic reticulum begins actively pumping calcium back into its sacs |
| Which joint allows for the widest range of movement? | Ball and socket |
| Thick myofilaments extend the length of the: | A-band |
| Which type of muscle does not have T-tubules? | Smooth |
| Joints joined by fibrocartilage are called | symphyses |
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ruebenr
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