× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
New Topic  
LU DEE LU DEE
wrote...
Posts: 542
Rep: 0 0
6 years ago
Mr. Warren has spinal cord damage that prevents nerve impulses from being carried from the CNS to muscles or glands. What specific type of neuron has been damaged?
 
  A) afferent neurons
  B) sensory neuron
  C) motor neuron
  D) axon terminals



(Question 2) Sensory receptors located in muscles and tendons are termed ________.
 
  A) Meissner's corpuscles
  B) proprioceptors
  C) lamellar corpuscles
  D) association neurons



(Question 3) The gaps between Schwann cells found at regular intervals in peripheral system neurons are called ________.
 
  A) synaptic clefts
  B) axon terminals
  C) nodes of Ranvier
  D) myelin sheaths



(Question 4) The part of the neuron that typically conducts nerve impulses away from the cell body is the ________.
 
  A) dendrite
  B) cell body
  C) synaptic cleft
  D) axon



(Question 5) Support cells in the central nervous system are collectively called ________.
 
  A) myelin sheaths
  B) neuroglia
  C) oligodendrocytes
  D) microglia



(Question 6) What cells form the myelin sheaths around nerve fibers in the PNS?
 
  A) satellite cells
  B) ependymal cells
  C) Schwann cells
  D) microglial cells



(Question 7) What are the two main functional subdivisions of the nervous system?
 
  A) central and peripheral
  B) somatic and autonomic
  C) sensory and motor
  D) autonomic and sympathetic



(Question 8) Explain how muscle movements mature in a baby, using examples of each.
 
  What will be an ideal response?



(Question 9) What types of movements are demonstrated by your arms and legs when you perform jumping jacks in physical education class? Describe these movements.
 
  What will be an ideal response?



(Question 10) Explain how isometric and isotonic contractions differ, using examples of each.
 
  What will be an ideal response?
Read 42 times
3 Replies

Related Topics

Replies
wrote...
6 years ago
1) C

- - -

2) B

- - -

3) C

- - -

4) D

- - -

5) B

- - -

6) C

- - -

7) A

- - -

8) 1. Muscle development proceeds in a superior/inferior direction. For instance, babies can raise their heads before they sit up, and they can sit up before they can walk.
2. Muscle control proceeds in a proximal/distal direction. For instance, babies can perform gross movements like wave bye-bye before they can use the pincer grasp to pick up a pin.

- - -

9) Abduction and adduction are antagonistic actions performed during jumping jacks. Abduction is moving a limb away from the midline of the body. When you jump and move your arms and legs away, you are performing abduction. Adduction is the movement of a limb toward the body midline. When you return your arms and legs and add them back to your body, you are performing adduction.

- - -

10) 1. Isometric contractions are contractions in which the muscles do not shorten. The myofilaments are trying to slide, but the muscle is pitted against some more or less immovable object. For example, when you push the palms of your hands together in front of you, your arm and chest muscles are contracting isometrically.
2. Isotonic contractions occur due to the successful sliding of the myofilaments. The muscle shortens and movement occurs. Bending the knee, lifting weights, and smiling are all examples of isotonic contractions.
LU D. Author
wrote...
6 years ago
Smiling Face with Open Mouth that's the expression my face made when I got the notification email
wrote...
6 years ago
glad I put that smile on your face Happy Dummy
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  1295 People Browsing
Related Images
  
 823
  
 839
  
 396
Your Opinion
What's your favorite coffee beverage?
Votes: 274