Home
Class 12
BIOLOGY
Which of the following statement(s) is/a...

Which of the following statement(s) is/are correct?
I. Two transmitter substances in the nervous system are dopamine and acetylcholine
II. Motor neurons convey information from receptors in the periphery to the CNS
III. Somatic motor nerves innervate skeletal muscles and autonomic nerves innervate smooth muscle, cardiac muscle and glands

A

I and II

B

II and III

C

Only III

D

I and III

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • NEURAL CONTROL AND COORDINATION

    ARIHANT NEET|Exercise CHAPTER EXERCISES MEDICAL ENTRANCES SPECIAL FORMAT QUESTIONS (Assertion Reason )|4 Videos
  • NEURAL CONTROL AND COORDINATION

    ARIHANT NEET|Exercise CHAPTER EXERCISES MEDICAL ENTRANCES GALLERY|111 Videos
  • NEURAL CONTROL AND COORDINATION

    ARIHANT NEET|Exercise CHAPTER EXERCISES Taking it Together (Assorted Questions of the Chapter for Advanced Level Practice )|211 Videos
  • MOVEMENT AND LOCOMOTION

    ARIHANT NEET|Exercise Medical entrances gallary ( Collection of question asked in NEET & various Medical Entrance Exam )|54 Videos
  • ORGANISMS AND POPULATIONS

    ARIHANT NEET|Exercise Chapter exercises ( Medical entrances gallery)|68 Videos

Similar Questions

Explore conceptually related problems

Which of the following staements are true? (i) Sudden action in response to something in the enviornment is called reflex action (ii) Sensory neurons carry signals from spinal cord to muscles. (iii) Motor neurons carry signals from spinal cord to muscles. (iv) The path through which signals are transmitted from a receptor to a muscle or a gland is called reflex arc.

Which of the following statements is/are correct? I. Striped muscles are in the form of bundles of cells. II. The Pal muscle fibres, which are called fasciculi. III. Skeletal muscles form the largest tissue in the body. IV. Cardiac muscles in the embryo are originated from mesenchyma cell. Choose the option with the correct statement(s).

Which of the following statements given below are true with reference to muscle contraction. I. Neurotransmitter acetycholine is released as nerve impulse reaches the end of axon and binds to receptor sites of motor end plate. II. Action potential passes from motor end plate over sarcoplasmic and then into the T-tubules and sarcoplasmic reticulum. III. Calcium ion are released into the sarcoplasm bind to troponin, causing a change in its shape and position. IV. Myosin cross bridges are able to bind to exposed active sites of actin. Choose the correct option.

Which of the following statements are true? (i) sudden action in respons to something in the environment is called reflex action (ii) sensory neurons carry electrical signals from spinal cord to muscles in a reflex action (iii) motor neurons carry signals from receptors to spinal cord in a reflex action (iv) the pathway of transmittin signals from a receptor to a muscle is a reflex action

Which of the following statements about the mechanism of muscle contraction are correct ? (i) Acetylcholine is released when the neural signal reaches the motor end plate. Muscle contraction is initiated by a signal sent by CNS via sensory neuron. (iii) During muscle contraction, isotropic band gets elongated (iv) Repeated activation of the muscles can lead to lactic acid accumulation.