HOLE'S HUMAN ANAT&PHYS W/ CONN & PROC+
HOLE'S HUMAN ANAT&PHYS W/ CONN & PROC+
15th Edition
ISBN: 9781265160197
Author: SHIER
Publisher: MCG
bartleby

Concept explainers

bartleby

Videos

Textbook Question
Book Icon
Chapter 12, Problem 42CA

Explain why looking at a close object causes fatigue in terms of how accommodation is accomplished. (pp. 475 and 478)

Blurred answer
Students have asked these similar questions
1. In vivo testing provides valuable insight into a drug’s kinetics. Assessing drug kinetics following multiple different routes of administration provides greater insight than just a single route of administration alone. The following data was collected in 250 g rats following bolus iv, oral (po), and intraperitoneal (ip) administration.Using this data and set of graphs, determine: (a) k, C0, V, and AUC* for the bolus iv data  (b) k, ka, B1, and AUC* for the po data  (c) k, ka, B1, and AUC* for the ip data  (d) relative bioavailability for po vs ip, Fpo/Fip  (e) absolute po bioavailability, (f)Fpo absolute ip bioavailability, Fip    MAKE SURE ANSWERS HAVE UNITS if appropriate. SHOW ALL WORK, including equation used, variables used and each step to your solution.
2. Drug quantification from plasma is commonly performed by using techniques such as HPLC or LC/MS. However, these methods do have limitations, and investigators may choose to use a radiolabeled analog of a drug instead. Radioligands are molecules that contain radioactive isotopes, commonly 3H or 14C. This technique allows investigators to quantify drug concentration from radiation measurements. The following measurements were made in 250 g rats following oral administration of 18.2 µCi of a 14C-labeled drug of interest: Time (min) Plasma Radiation Levels (µCi/L) 0 0.0 2 9.7 4 19.2 7 25.3 9 37.8 12 39.6 14 45.8 17 48.8 20 52.0 25 56.4 30 59.2 35 60.1 40 61.1 45 62.1 50 62.8 60 63.1 70 62.1 80 60.1 90 57.3 100 55.5 110 53.7 120 52.2 150 48.0 180 45.0 240 39.0  Note that a µCi is a measure of the amount of radioactivity and hence is a measure of the amount of drug present.  Given that the oral bioavailability of this drug is known to be essentially 100%, estimate the following from this…
The current nutrition labelling regulation in Hong Kong requires food manufacturer to list E+7 information on the package of pre-packaged food products. Do you think that more nutrients, such as calcium and cholesterol, shall be included?

Chapter 12 Solutions

HOLE'S HUMAN ANAT&PHYS W/ CONN & PROC+

Ch. 12 - Prob. 11PCh. 12 - 12 Explain how muscle spindles help maintain...Ch. 12 - 13 Where are Golgi tendon organs located? Ch. 12 - 14 What is the function of Golgi tendon organs? Ch. 12 - 15 Where are the olfactory receptors located? Ch. 12 - Prob. 16PCh. 12 - Prob. 17PCh. 12 - Prob. 18PCh. 12 - Prob. 19PCh. 12 - Prob. 20PCh. 12 - Describe the outer, middle, and inner ears.Ch. 12 - Prob. 22PCh. 12 - Prob. 23PCh. 12 - Prob. 24PCh. 12 - Prob. 25PCh. 12 - Prob. 26PCh. 12 - Which structures provide the sense of static...Ch. 12 - Prob. 28PCh. 12 - 29 Explain how the eyelid is moved. Ch. 12 - 30 Describe the conjunctiva. Ch. 12 - 31 What is the function of the lacrimal...Ch. 12 - 32 Describe the function of each extrinsic eye...Ch. 12 - 33 Describe the outer and middle tunics of the...Ch. 12 - 34 What factors contribute to the transparency of...Ch. 12 - 35 How does the shape of the lens change during...Ch. 12 - 36 Why would reading for a long time lead to “eye...Ch. 12 - 37 Explain the origin of aqueous humor and trace...Ch. 12 - 38 How is the size of the pupil regulated? Ch. 12 - 39 Describe the structure of the retina. Ch. 12 - 40 What is refraction? Ch. 12 - 41 What parts of the eye provide refracting...Ch. 12 - 42 Why is it necessary to accommodate for viewing...Ch. 12 - 43 Distinguish between the rods and the cones of...Ch. 12 - 44 Explain the roles of visual pigments. Ch. 12 - 45 What factors make stereoscopic vision...Ch. 12 - Trace the pathway of visual impulses from the...Ch. 12 - Prob. 47PCh. 12 - Prob. 48PCh. 12 - Prob. 49PCh. 12 - Explain the difference between a general sense and...Ch. 12 - Prob. 2CACh. 12 - Prob. 3CACh. 12 - Prob. 4CACh. 12 - Explain the projection of a sensation. (p. 445)Ch. 12 - Prob. 6CACh. 12 - Prob. 7CACh. 12 - Prob. 8CACh. 12 - Prob. 9CACh. 12 - Prob. 10CACh. 12 - Prob. 11CACh. 12 - Prob. 12CACh. 12 - Prob. 13CACh. 12 - Prob. 14CACh. 12 - Prob. 15CACh. 12 - Distinguish between muscle spindles and Golgi...Ch. 12 - Prob. 17CACh. 12 - Prob. 18CACh. 12 - Prob. 19CACh. 12 - Salivary glands are important in taste because...Ch. 12 - Prob. 21CACh. 12 - Prob. 22CACh. 12 - Prob. 23CACh. 12 - Match the ear area with the associated structure:...Ch. 12 - Prob. 25CACh. 12 - Prob. 26CACh. 12 - Prob. 27CACh. 12 - Prob. 28CACh. 12 - Prob. 29CACh. 12 - Prob. 30CACh. 12 - Prob. 31CACh. 12 - Prob. 32CACh. 12 - Prob. 33CACh. 12 - Prob. 34CACh. 12 - Prob. 35CACh. 12 - Prob. 36CACh. 12 - Prob. 37CACh. 12 - Explain the mechanisms of pupil constriction and...Ch. 12 - Distinguish between the fovea centralis and the...Ch. 12 - Prob. 40CACh. 12 - Prob. 41CACh. 12 - Explain why looking at a close object causes...Ch. 12 - Prob. 43CACh. 12 - Prob. 44CACh. 12 - Prob. 45CACh. 12 - Prob. 46CACh. 12 - Prob. 47CACh. 12 - Define stereoscopic vision. (p. 481)Ch. 12 - Prob. 49CACh. 12 - Prob. 50CACh. 12 - Prob. 51CACh. 12 - Prob. 52CACh. 12 - Prob. 53CACh. 12 - Prob. 1IACh. 12 - Loss of the sense of smell often precedes the...Ch. 12 - Prob. 3IACh. 12 - Prob. 4IACh. 12 - Prob. 5IA
Knowledge Booster
Background pattern image
Biology
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Intro To Health Care
Health & Nutrition
ISBN:9781337338295
Author:Mitchell
Publisher:Cengage
Text book image
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning
Text book image
Principles Of Radiographic Imaging: An Art And A ...
Health & Nutrition
ISBN:9781337711067
Author:Richard R. Carlton, Arlene M. Adler, Vesna Balac
Publisher:Cengage Learning
Text book image
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
Text book image
Essentials Of Human Development
Biology
ISBN:9781285647357
Author:Kail
Publisher:Cengage
Text book image
Surgical Tech For Surgical Tech Pos Care
Health & Nutrition
ISBN:9781337648868
Author:Association
Publisher:Cengage
The Sensorimotor System and Human Reflexes; Author: Professor Dave Explains;https://www.youtube.com/watch?v=M0PEXquyhA4;License: Standard youtube license