Anatomy & Physiology B/C

[bhavjain]

1. Describe the pathway and information carried by Baum's loop. What happens if these fibers are damaged?
2. What are the functions of arginine vasotocin?
3. What is rhombencephalosynapsis characterized by?
4. What is ataxia?

[mangothecat]

1. Describe the pathway and information carried by Baum's loop. What happens if these fibers are damaged?
2. What are the functions of arginine vasotocin?
3. What is rhombencephalosynapsis characterized by?
4. What is ataxia?

Dang these are great (but hard) questions!

only know 1 and 4... (Click to Show Hidden Text)

1. Baum's loop consists of fibers in the optic radiation that synapse at the lateral geniculate body with fibers that transmit signals from the superior retina. Damage to Baum's loop results in the loss of an inferior quadrant of the field of vision, aka inferior quandranopia. 
4. Ataxia is the loss of muscle coordination.

[bhavjain]

1. Describe the pathway and information carried by Baum's loop. What happens if these fibers are damaged?
2. What are the functions of arginine vasotocin?
3. What is rhombencephalosynapsis characterized by?
4. What is ataxia?

Dang these are great (but hard) questions!

only know 1 and 4... (Click to Show Hidden Text)

1. Baum's loop consists of fibers in the optic radiation that synapse at the lateral geniculate body with fibers that transmit signals from the superior retina. Damage to Baum's loop results in the loss of an inferior quadrant of the field of vision, aka inferior quandranopia. 
4. Ataxia is the loss of muscle coordination.

Haha, just thought I'd give a bit of a challenge.

2 and 3... (Click to Show Hidden Text)

2. AVT is produced by the posterior pituitary gland and potentially pineal body, has biological properties like oxytocin and ADH, involved in social, sexual, and sleep behavior.
3. Rhombencephalosynapsis is a disease in which the cerebellum fails to fuse (missing vermis) resulting in ataxia.

Your turn.

[mangothecat]

1. What are the pontine nuclei?
2. Which cranial nerve pairs issue from the pontine nuclei?

[bhavjain]

1. What are the pontine nuclei?
2. Which cranial nerve pairs issue from the pontine nuclei?

Answer (Click to Show Hidden Text)

1. The pontine nuclei are neurons lying in the basilar pons. It receives input from the corticopontine fibers of the primary motor cortex, and outputs into the contralateral cerebellum through the middle cerebellar peduncle.
2. CN5, CN6, CN7, CN8.

[mangothecat]

1. What are the pontine nuclei?
2. Which cranial nerve pairs issue from the pontine nuclei?

Answer (Click to Show Hidden Text)

1. The pontine nuclei are neurons lying in the basilar pons. It receives input from the corticopontine fibers of the primary motor cortex, and outputs into the contralateral cerebellum through the middle cerebellar peduncle.
2. CN5, CN6, CN7, CN8.

Noice answer! Your turn!

[bhavjain]

What is the function of the ventricles?

[rgandhi2002]

What is the function of the ventricles?

I'm assuming ventricles of the heart?

I think... (Click to Show Hidden Text)

The ventricle is one of two large chambers of the heart that collect and expel blood received from an atrium towards the peripheral beds within the body and lungs.

Let me know if that is what you were asking. Sorry!

[bhavjain]

What is the function of the ventricles?

I'm assuming ventricles of the heart?

I think... (Click to Show Hidden Text)

The ventricle is one of two large chambers of the heart that collect and expel blood received from an atrium towards the peripheral beds within the body and lungs.

Let me know if that is what you were asking. Sorry!

Sorry, I mean ventricles of the brain. (Cardiovascular System isn't a topic this year , but nervous system is).

[rgandhi2002]

What is the function of the ventricles?

I'm assuming ventricles of the heart?

I think... (Click to Show Hidden Text)

The ventricle is one of two large chambers of the heart that collect and expel blood received from an atrium towards the peripheral beds within the body and lungs.

Let me know if that is what you were asking. Sorry!

Sorry, I mean ventricles of the brain. (Cardiovascular System isn't a topic this year , but nervous system is).

Yeah that's what I realized.

Ventricle of the brain (Click to Show Hidden Text)

The region choroid plexus in each ventricle has ependymal cells involved in the production of cerebrospinal fluid.