Question 1

Which one of the following is the correct sequence for a regulatory reflex arc?

Accepted Answer

A) Stimulus, effector, efferent pathway, integrating center, afferent pathway, receptor 
B) Stimulus, receptor, efferent pathway, integrating center, afferent pathway, effector 
C) Stimulus, receptor, afferent pathway, integrating center, efferent pathway, effector 
D) Stimulus, effector, afferent pathway, integrating center, efferent pathway, receptor 
E) Effector, efferent pathway, integrating center, afferent pathway, receptor, stimulus 
A) Stimulus, effector, efferent pathway, integrating center, afferent pathway, receptor 
B) Stimulus, receptor, efferent pathway, integrating center, afferent pathway, effector 
C) Stimulus, receptor, afferent pathway, integrating center, efferent pathway, effector 
D) Stimulus, effector, afferent pathway, integrating center, efferent pathway, receptor 
E) Effector, efferent pathway, integrating center, afferent pathway, receptor, stimulus

Question 2

Homeostasis refers to the relative constancy of the external environment.

Accepted Answer

A) True 
 B)False

Question 3

Which of the following statements about biological rhythms is correct?

Accepted Answer

A) Menstrual cycles are examples of circadian rhythms 
B) Circadian rhythms are driven by pacemakers entrained by light and dark cycles 
C) Jet lag is a result of desynchronization of the internal clock from external time cues 
D) Both menstrual cycles are examples of circadian rhythms and circadian rhythms are driven by pacemakers entrained by light and dark cycles are correct 
E) Both circadian rhythms are driven by pacemakers entrained by light and dark cycles and jet lag is a result of desynchronization of the internal clock from external time cues are correct 
A) Menstrual cycles are examples of circadian rhythms 
B) Circadian rhythms are driven by pacemakers entrained by light and dark cycles 
C) Jet lag is a result of desynchronization of the internal clock from external time cues 
D) Both menstrual cycles are examples of circadian rhythms and circadian rhythms are driven by pacemakers entrained by light and dark cycles are correct 
E) Both circadian rhythms are driven by pacemakers entrained by light and dark cycles and jet lag is a result of desynchronization of the internal clock from external time cues are correct

Question 4

Neural and hormonal control mechanisms differ in

Accepted Answer

A) That only neural mechanisms mediate reflexes 
B) That mode of delivery of the chemical regulator 
C) That chemical nature of the regulator used 
D) Both that only neural mechanisms mediate reflexes and that mode of delivery of the chemical regulator are correct 
E) Both that mode of delivery of the chemical regulator and that chemical nature of the regulator used are correct 
A) That only neural mechanisms mediate reflexes 
B) That mode of delivery of the chemical regulator 
C) That chemical nature of the regulator used 
D) Both that only neural mechanisms mediate reflexes and that mode of delivery of the chemical regulator are correct 
E) Both that mode of delivery of the chemical regulator and that chemical nature of the regulator used are correct

Question 5

Homeostatic control systems and acclimatization are examples of biological adaptations.

Accepted Answer

A) True 
 B)False

Question 6

The developmental process that leads to specialized cell types is called

Accepted Answer

A) Genomics 
B) Differentiation 
C) Homeostasis 
D) Positive feedback 
E) Acclimatization 
A) Genomics 
B) Differentiation 
C) Homeostasis 
D) Positive feedback 
E) Acclimatization

Question 7

The efferent pathway of a reflex arc

Accepted Answer

A) Is so named because it carries information to the integrating center 
B) Can be neural 
C) Can be hormonal 
D) Both is so named because it carries information to the integrating center and can be neural are correct 
E) Both can be neural and can be hormonal are correct 
A) Is so named because it carries information to the integrating center 
B) Can be neural 
C) Can be hormonal 
D) Both is so named because it carries information to the integrating center and can be neural are correct 
E) Both can be neural and can be hormonal are correct

Question 8

The concept of homeostasis

Accepted Answer

A) Refers to maintaining conditions of constancy of the internal environment 
B) Includes the concept of an error signal 
C) Includes the concept of feedforward regulation 
D) Includes all of the choices 
E) Includes none of the choices 
A) Refers to maintaining conditions of constancy of the internal environment 
B) Includes the concept of an error signal 
C) Includes the concept of feedforward regulation 
D) Includes all of the choices 
E) Includes none of the choices

Question 9

The internal environment consists of interstitial fluid and blood plasma.

Accepted Answer

A) True 
 B)False

Question 10

The tall slender body shape that helps to dissipate heat in people native to equatorial regions is an example of

Accepted Answer

A) An adaptation 
B) Acclimatization 
C) Set point resetting 
D) Homeostasis 
E) Phase-shift 
A) An adaptation 
B) Acclimatization 
C) Set point resetting 
D) Homeostasis 
E) Phase-shift

Question 11

Which of the following statements applies to autocrine regulation?

Accepted Answer

A) Chemical regulators are released directly into blood vessels 
B) Chemical regulators released by cells affect the functional status of different kinds of cells in the vicinity of the secretory cell 
C) Chemical regulators affect the same cell that produced it 
D) Chemical regulators reach their site of action through a duct 
E) Chemical regulators are continuously released in constant amounts by the cell 
A) Chemical regulators are released directly into blood vessels 
B) Chemical regulators released by cells affect the functional status of different kinds of cells in the vicinity of the secretory cell 
C) Chemical regulators affect the same cell that produced it 
D) Chemical regulators reach their site of action through a duct 
E) Chemical regulators are continuously released in constant amounts by the cell

Question 12

The number of distinct cell types in the human body is about twenty.

Accepted Answer

A) True 
 B)False

Question 13

_______________ is the regulation of cellular activity by messengers from nearby cells.

Accepted Answer

The answer of _______________ is the regulation of cellular activity...

Question 14

Homeostasis

Accepted Answer

A) Depends upon control systems that use primarily positive feedback 
B) Involves adjusting to the external environment in a process called acclimatization 
C) Depends upon the interaction of receptors, integrating centers and effectors 
D) Both depends upon control systems that use primarily positive feedback and involves adjusting to the external environment in a process called acclimatization are correct 
E) Is described by none of the choices 
A) Depends upon control systems that use primarily positive feedback 
B) Involves adjusting to the external environment in a process called acclimatization 
C) Depends upon the interaction of receptors, integrating centers and effectors 
D) Both depends upon control systems that use primarily positive feedback and involves adjusting to the external environment in a process called acclimatization are correct 
E) Is described by none of the choices

Question 15

If the amount of sodium in the blood decreases,then a negative feedback control mechanism would be expected to

Accepted Answer

A) Decrease the amount of sodium in the blood 
B) Increase the amount of sodium in the blood 
C) Leave the amount of sodium unchanged 
D) Change the set point for sodium 
A) Decrease the amount of sodium in the blood 
B) Increase the amount of sodium in the blood 
C) Leave the amount of sodium unchanged 
D) Change the set point for sodium

Question 16

Local homeostatic responses differ from reflex arcs in that the former lack ________.

Accepted Answer

afferent a

Question 17

Which of the following statements is true with regard to the extracellular matrix?

Accepted Answer

A) Its composition is uniform in all of the body's tissues 
B) It is an inert framework upon which cells are anchored 
C) It is composed of fibers and other proteins 
D) It functions to allow communication between cells 
E) Both it is composed of fibers and other proteins and it functions to allow communication between cells are correct 
A) Its composition is uniform in all of the body's tissues 
B) It is an inert framework upon which cells are anchored 
C) It is composed of fibers and other proteins 
D) It functions to allow communication between cells 
E) Both it is composed of fibers and other proteins and it functions to allow communication between cells are correct

Question 18

Which of the following is/are functions of the human nervous system?

Accepted Answer

A) Receiving, storing and processing information on the internal and external environments 
B) Bringing about changes in physiology and/or behavior to ensure optimal functions of homeostatic mechanisms 
C) Secretion of hormones 
D) Both receiving, storing and processing information on the internal and external environments and bringing about changes in physiology and/or behavior to ensure optimal functions of homeostatic mechanisms are correct 
E) All of the choices are correct 
A) Receiving, storing and processing information on the internal and external environments 
B) Bringing about changes in physiology and/or behavior to ensure optimal functions of homeostatic mechanisms 
C) Secretion of hormones 
D) Both receiving, storing and processing information on the internal and external environments and bringing about changes in physiology and/or behavior to ensure optimal functions of homeostatic mechanisms are correct 
E) All of the choices are correct

Question 19

According to the balance concept of chemical homeostasis,

Accepted Answer

A) Negative balance results when net gain of a substance exceeds net loss from the body 
B) Negative balance results when net loss of a substance exceeds net gain to the body 
C) Stable balance results when net gain of a substance equals net loss from the body 
D) Both negative balance results when net gain of a substance exceeds net loss from the body and stable balance results when net gain of a substance equals net loss from the body are correct 
E) Both negative balance results when net loss of a substance exceeds net gain to the body and stable balance results when net gain of a substance equals net loss from the body are correct 
A) Negative balance results when net gain of a substance exceeds net loss from the body 
B) Negative balance results when net loss of a substance exceeds net gain to the body 
C) Stable balance results when net gain of a substance equals net loss from the body 
D) Both negative balance results when net gain of a substance exceeds net loss from the body and stable balance results when net gain of a substance equals net loss from the body are correct 
E) Both negative balance results when net loss of a substance exceeds net gain to the body and stable balance results when net gain of a substance equals net loss from the body are correct

Question 20

An important function of organ systems is to regulate the external environment of the body.

Accepted Answer

A) True 
 B)False

Which one of the following is the correct sequence for a regulatory reflex arc?

Homeostasis refers to the relative constancy of the external environment.

Which of the following statements about biological rhythms is correct?

Neural and hormonal control mechanisms differ in

Homeostatic control systems and acclimatization are examples of biological adaptations.

The developmental process that leads to specialized cell types is called

The efferent pathway of a reflex arc

The concept of homeostasis

The internal environment consists of interstitial fluid and blood plasma.

The tall slender body shape that helps to dissipate heat in people native to equatorial regions is an example of

Which of the following statements applies to autocrine regulation?

The number of distinct cell types in the human body is about twenty.

_______________ is the regulation of cellular activity by messengers from nearby cells.

Homeostasis

If the amount of sodium in the blood decreases,then a negative feedback control mechanism would be expected to

Local homeostatic responses differ from reflex arcs in that the former lack ________.

Which of the following statements is true with regard to the extracellular matrix?

Which of the following is/are functions of the human nervous system?

According to the balance concept of chemical homeostasis,

An important function of organ systems is to regulate the external environment of the body.

Chemical Composition of the Body

Cellular Structure, Proteins, and Metabolism

Movement of Molecules Across Cell Membranes

Control of Cells by Chemical Messengers

Neuronal Signaling and the Structure of the Nervous System

Sensory Physiology

Consciousness, the Brain, and Behavior

Muscle

Control of Body Movement

The Endocrine System

Cardiovascular Physiology

Respiratory Physiology

The Kidneys and Regulation of Water and Inorganic Ions

The Digestion and Absorption of Food

Regulation of Organic Metabolism and Energy Balance

Reproduction

The Immune System

Medical Physiology: Integration Using Clinical Cases

Filters

Exam 1: Homeostasis: a Framework for Human Physiology

Which one of the following is the correct sequence for a regulatory reflex arc?

Homeostasis refers to the relative constancy of the external environment.

Which of the following statements about biological rhythms is correct?

Neural and hormonal control mechanisms differ in

Homeostatic control systems and acclimatization are examples of biological adaptations.

The developmental process that leads to specialized cell types is called

The efferent pathway of a reflex arc

The concept of homeostasis

The internal environment consists of interstitial fluid and blood plasma.

The tall slender body shape that helps to dissipate heat in people native to equatorial regions is an example of

Which of the following statements applies to autocrine regulation?

The number of distinct cell types in the human body is about twenty.

_______________ is the regulation of cellular activity by messengers from nearby cells.

Homeostasis

If the amount of sodium in the blood decreases,then a negative feedback control mechanism would be expected to

Local homeostatic responses differ from reflex arcs in that the former lack ________.

Which of the following statements is true with regard to the extracellular matrix?

Which of the following is/are functions of the human nervous system?

According to the balance concept of chemical homeostasis,

An important function of organ systems is to regulate the external environment of the body.

Chemical Composition of the Body

Cellular Structure, Proteins, and Metabolism

Movement of Molecules Across Cell Membranes

Control of Cells by Chemical Messengers

Neuronal Signaling and the Structure of the Nervous System

Sensory Physiology

Consciousness, the Brain, and Behavior

Muscle

Control of Body Movement

The Endocrine System

Cardiovascular Physiology

Respiratory Physiology

The Kidneys and Regulation of Water and Inorganic Ions

The Digestion and Absorption of Food

Regulation of Organic Metabolism and Energy Balance

Reproduction

The Immune System

Medical Physiology: Integration Using Clinical Cases

Filters