Question

1.

1. A sudden stretch of a muscle excites a feedback system that opposes the stretch. This message starts in the ____.

   	a.	cerebellum
   	b.	Pacinian corpuscles
   	c.	muscle spindles
   	d.	dorsal root ganglion

2. Activity of a muscle spindle is to ____ as activity of the Golgi tendon organ is to ____.

   	a.	contraction; inhibition of contraction
   	b.	contraction; contraction
   	c.	inhibition of contraction; contraction
   	d.	inhibition of contraction; inhibition of contraction

3. Annamae is studying for a quiz on movement. She writes in her notes that _____ muscle type is responsible for the activity of the ______.

   	a.	striated; digestive system
   	b.	cardiac; digestive system
   	c.	cardiac; heart
   	d.	smooth; heart

4. Brian’s body initiated the stretch reflex. Which is true?

   	a.	Brian will now stretch his muscle as a result of the reflex.
   	b.	His muscles will now be inhibited.
   	c.	He will now be able to stretch further.
   	d.	The reflex was initiated because Brian stretched a muscle.

5. “Female hormones” are referred to as ____.

   	a.	estrogens
   	b.	activating hormones
   	c.	SRY
   	d.	androgens

Answer 1

Solution:
1)c)A sudden stretch of a muscle excites a feedback system that opposes the stretch. This message starts in the muscle spindles.

2)a) Activity of a muscle spindle is to contraction as activity of the Golgi tendon organ is to inhibition of contraction.

3)c) Annamae is studying for a quiz on movement. She writes in her notes that cardiac muscle type is responsible for the activity of the heart.

4) d)Brian’s body initiated the stretch reflex then the reflex was initiated because Brian stretched a muscle.

5)(d)Estrogen.