Human Physiology Quiz

Epinephrine (also known as adrenaline or adrenalin) is a hormone and a neurotransmitter. The model for the action of Epinephrine is shown below.
Which of the following molecules act as a second messenger in the cascade by which epinephrine stimulates the activation of the enzyme glycogen phosphorylase?

• Adenosine
  
• Adenylyl cyclase
  
• Citric acid
• Cyclic AMP

Cell signaling involves converting extracellular signals to specific responses inside the target cell. Which of the following best describes how a cell initially responds to a signal?

• The cell experiences a change in receptor conformation  
• The cell experiences an influx of ions  
• The cell experiences an increase in protein kinase activity  
• The cell experiences G protein activation

Which body system filters the blood and eliminates wastes in liquid form?

• Digestive system
• Lymphatic system
• Endocrine system
• Urinary system

Blood vessels are muscular tubes that carry blood, sugar and oxygen to the parts of the body.  Nervous impulses cause these tubes to expand or contract.  Which system do the vessels belong to?

• Cardiovascular
• Nervous
• Muscular
• Digestive

Tags

NGSS.MS-LS1-3

The glands of the body are under control of which system?

• Muscular
• Endocrine
• Nervous
• Lymphatic 

Homeostasis is also termed a dynamic equilibrium because

• The body maintains an internal balance, within fluctuating limits
• In homeostasis parts of the system change but the overall system stays constant
• ALL THE ABOVE

Tags

NGSS.HS-LS1-3

How would the body respond to an increased environmental temperature?

• Hairs on body erect
• Sweating
• Shivering
• Feel the edge to go play soccer

Tags

NGSS.HS-LS1-3

Oogenesis, the process that creates female gametes, is halted at prophase I until puberty. Which of the following describes the DNA content of a female’s gametes during her childhood?

• 46 chromosomes, 92 chromatids
• 23 chromosomes, 23 chromatids
• 46 chromosomes, 46 chromatids
• 23 chromosomes, 46 chromatids
  
  

The most correct sequence of early development following fertilization is: 

• Zygote, blastomeres, morula, blastocyst
• Oocyte, zygote, morula, blastocyst
• Zygote, conceptus, blastocyst
• Polar bodies, zygote, conceptus, blastocyst

Synaptic signaling involves

• Endocrine signals
• Paracrine signals 
• Autocrine signals
• Neurotransmitters