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Brittany Dayzie-Nez
Physiology
| Question | Answer |
|---|---|
| When negative feedback control systems oppose a change that is opposite in direction of the initial disturbance, | they are slowed in the homeostatic range. |
| Homeostatic control mechanisms are categorized as | organs that are directly influenced by physiological variables. |
| Viruses | are intracellular parasites that consist of DNA or RNA sometimes surrounded by a lipoprotein envelope. |
| an accelerated change occurs during a | positive-feedback control |
| Homeostasis | a state of constant balance |
| List three basic components of the feedback control loop | Effector mechanism, Sensor, Integrating Center |
| Tapeworms are | the most complex pathogenic organisms. |
| The reproductive ____, is the ____ involved in maintaining homeostasis. | system; least |
| List three feedback mechanisms: | 1. Minimize changes in blood glucose levels 2. Maintain homeostasis 3. Are responsible for an increased rate of sweating when air temperature is higher than body temperature |
| If oxytocin inhibits uterine contraction during labor, what feedback loop would be at play? | Negative feedback control loop |
| Mad cow disease is thought to be caused by? | Prion |
| Shape determines how a protein performs, true or false? | True |
| Glycogen is sometimes referred to as? | animal starch |
| Amino acids polymers are | proteins |
| A triglyceride is composed of a glycerol molecule and ___ of the same type of ___ acid. | three; fatty |
| NH3+ | is an amino group in an amino acid |
| What does the term glycoprotein tell us about the compound combination? | The compound is made of carbohydrates and protein, with protein being the dominant component. |
| A creatine phosphate is and _____ -releasing molecule that does not contain a _____. | energy; nucleotide |
| Triglycerides and phospholipids both contain a hydrophobic and hydrophilic end, true or false? | False |
| List 1 true characteristic of prostaglandins and steroids | They both have a ring structure in their molecule. |
| List the characteristic of RNA | 1. Contains ribose sugar 2. Contains adenine 3. Composed of smaller molecules called nucleotides |
| Maltose is formed by two | glucose molecules |
| Double bonds between carbon atoms will kink or bend because | unsaturated fats |
| What bonds amino acids frequently | Peptide bonds |
| Phospholipid and steroid are structural lipids found in the | cell membrane. |
| RNA makes ____ by translation. | proteins |
| Anaphase | a stage of mitosis when chromosomes move to the opposite ends of the cells along the spindle fibers. |
| Facilitated diffusion is not an ________ transport process because it does _____on cell energy. | active; not depend |
| Cells that are genetically identical to the parent cell | Normal mitosis |
| Two haploid gametes are a characteristic of meiosis, true or false? | false |
| NacI move ___ and ___ of the cell membrane. | in; out |
| Difussion requires a concentration gradient, true or false? | true |
| The site of transcription is within the _____, whereas the site of translate is in the _____. | nucleus; cytoplasm |
| Apocrine sweat glands can be found in the soles of the feet, true or false? | false |
| Fingernail growth happens in what stratum? | Stratum Germinativum |
| Keratinization begins in what stratum? | Stratum granulosum |
| dermal tissue is found in the hair ______. | Papilla |
| Synthesis of vitamin E is a function of the skin, true or false? | false |
| List 3 characteristics of connective tisue | 1. Protects 2. Supports 3. Transports |
| List 3 characteristics of epithelial tissue | 1. Lines the interior of body cavities 2. Covers and protects body surfaces 3. Forms glands that secrete substances into and out of the body. |
| Astrocytes | cells that form the blood-brain barrier BBB that protects the brain from harmful substances in the blood. |
| _____ and _____ cells electrically insulate axons to increase the speed of conduction. | Oligodendrocytes; Schwann cells |
| List 2 proteoglycans and 1 non proteoglycan found in the matrix of connective tissue | 2 proteoglycans - glucosamine and hyaluronic acid, 1 non proteoglycan - collagen. |
| Keloid scars heal in the ____ tissue. | connective |
| Vitamin D is absorbed through the skin, true or false? | true |
| Communication is not a function of connective tissue? | true |
| Especially thick stratum corneum is found in the ____. | sole of the feet. |
| Cartilage is slow at healing because | it is semi-solid and flexible and it does not have blood supply. |
| Endosteum is where bone growth grows in | diameter |
| A newborn passes the pelvic _____ during childbirth | outlet |
| The amount of calcium in bone increases and the level of calcium in the blood decreases as a result of | osteoblast |
| The zone of hypertrophy is in the third layer of the _________. | epiphyseal plate |
| Myosin, actin, tropomyosin and troponin are proteins that make up | myofilaments |
| T-tubules are a part of the neuromuscular junction, true or false? | false |
| The shape of the articulating surfaces of the bones make movement possible in the | synovial joints |
| Isotonic contractions are considered the most movements in the body, true or false? | true |
| Membrane potential is said to be | polarized |
| Synapses are located between | the synaptic knobs on one neuron and the dendrites or cell body of another neuron. |
| In a myelinated neuron, the impulse can travel under the ___ between the nodes of ____. | myelin; Ranvier |
| The gated-channel receptor acts to directly change ________ when stimulated. | ion permeability |
| In a myelinated fiber, the ________ jumps from one node of _____ to the next. | action potential; Ranvier |
Created by:
b.dayzie
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