Wiley Plus Chapter 1 Homework

Place the following in correct sequence from the simplest to the most complex: 1. tissue 2. organismal 3. organ 4. chemical 5. system 6. cellular

4-6-1-3-5-2

The homeostasis of the body is controlled through a series of steps called a feedback system or feedback loop. One component of such systems is a control center. Which of the following organs would frequently serve as the control center for a feedback system (remember, the control center evaluates the disruption to homeostasis, and it also triggers a response)? Skeletal muscles Brain Nerve endings in the skin Blood and lymphatic fluid Sweat glands

Brain

Which subspecialty of anatomy studies the structures and function of cells? Embryology Systemic anatomy Histology Cell biology Developmental biology

Cell biology

Which of the following is mismatched? Receptor - Monitors the changes in a controlled condition and sends input to a controlled center Control center - Receives input from a receptor and analyzes it. Effector - Analyzes receptor output to determine if a controlled condition is correctly maintained None of these statements is mismatched

Effector - Analyzes receptor output to determine if a controlled condition is correctly maintained

The two systems most responsible for maintaining homeostasis are the Respiratory and cardiovascular systems Muscular and skeletal systems Integumentary and immune systems Endocrine and nervous systems

Endocrine and nervous systems

A positive feedback mechanism is defined as: a feedback mechanism that removes the original stimulus a feedback mechanism that reverses a change in a controlled condition a feedback mechanism that reinforces the change in the controlled condition the dominant feedback mechanism of the body

a feedback mechanism that reinforces the change in the controlled condition

Homeostasis is the condition in which the body maintains: the lowest possible energy usage. a relatively stable internal environment within limits. a static state with no deviation from preset points. a changing state within an unlimited range.

a relatively stable internal environment within limits.

At what level(s) of organization would an exercise physiologist study the human body? Cell Organ Organ system All choices are correct

all are correct

If a doctor listens to a gurgling noise within the gastrointestinal tract, they are performing inspection palpation percussion auscultation

auscultation

In order to improve a patient's _______, a respiratory therapist would be interested in studying the functions of the individual's ___________. breathing; air passageways and lungs heart rate; heart and blood vessels resistance to disease; immune system ability to walk, skeletal and muscular systems

breathing; air passageways and lungs

The lowest level that exhibits the characteristics of life is: tissue atoms cells organs elements

cells

Atoms and molecules are part of which level of organization in the human body? Chemical Cellular Tissue Organ System

chemical

The development of specialized cells from unspecialized stem cells is a description of which of the following basic life processes? Metabolism Movement Growth Differentiation Reproduction

differentiation

_____ occurs when an embryonic stem cell becomes a neuron. catabolism growth reproduction anabolism differentiation

differentiation

Hormonal or electrical signals are sent from the control center to the receptors stimulus afferent pathway effectors efferent pathway

effectors

Which subspecialty of physiology deals with the effects of hormones control of reproduction? endocrinology cardiovascular physiology neurophysiology immunology pathophysiology

endocrinology

Cells are able to transport materials from one region of the cell to another just as the body is able to transport substances to different locations, or skeletal muscles (working with your skeleton) can transport you from the sofa to the refrigerator. What basic life process is illustrated by this description? Metabolism Growth Movement Differentiation Reproduction

movement

This system produces body movements, stabilizes body positions and generates heat. Endocrine system Respiratory system Muscular system Integumentary system

muscular system

A particular stimulus causes an increase in the levels of CO2 in the blood. A feedback mechanism that increases respiration rate to exhale more CO2 would be: monitored control center positive negative

negative

If blood concentrations of thyroid hormones increase above a certain level, Thyrotropin-releasing hormone (TRH) neurons in the hypothalamus are inhibited and stop secreting TRH. This is an example of negative feedback positive feedback

negative feedback

A structure made up of two or more types of tissues that performs a specific set of functions is at what level of organization? Chemical Cellular Tissue Organ System

organ

If one was reviewing the pattern of tissue changes associated with disease development, they would be studying exercise physiology renal physiology pathological anatomy cardiovascular physiology immunology

pathological anatomy

Which describes the study of the functions of body structures? anatomy physiology endocrinology histology immunology

physiology

Hydrochloric acid and pepsin are enzymes secreted by cells in your stomach to digest proteins. The presence of partially digested protein in the stomach triggers the secretion of more HCl and pepsin. Thus, once digestion begins, it becomes a self-accelerating process. This is an example of positive feedback negative feedback

positive feedback

Regulation of blood glucose in the body is an example of homeostasis. T/F?

true

Which system of the body is responsible for elimination of wastes and regulating the volume and composition of the blood, including production of red blood cells? Urinary Respiratory Digestive Endocrine Nervous

urinary

All of the following would be methods of studying anatomy except: dissection of organs examination of tissues with a microscope investigating the chambers of the heart identifying the features of the bones of the arm using devices that measure heart rate and respiration

using devices that measure heart rate and respiration