Question

2.Decide which statements are TRUE or FALSE, give reasons for false ones. 1 Gray matter has projections which are called horns. 2. Ventral roots and horns transmit the nerve impulse from the muscles to the brain. 3. There are 35 segments in the spinal cord. 4. The dorsal roots and horns transmit information from sensitive cells, receptor cells, to the brain. 5. Grey matter consists of bundles of neurons bodies and dendrites. 6. In the brain there are also three membranes. 7. The spinal cord performs three functions.

Answer 1

Ответ:

2.Decide which statements are TRUE or FALSE, give reasons for false ones.  

1 Gray matter has projections which are called horns.  F

Gray matter has outgrowths they are called horns.

2. Ventral roots and horns transmit the nerve impulse from the muscles to the brain.  F

   The abdominal (anterior) roots and horns transmit nerve impulses (commands) from the brain to the muscles, causing them to contract and make certain movements

3. There are 35 segments in the spinal cord.  F

   There are 31 segments in the spinal cord

4. The dorsal roots and horns transmit information from sensitive cells, receptor cells, to the brain. T

5. Grey matter consists of bundles of neurons bodies and dendrites. F

   Gray matter (substantia grisea) is one of the components of the human central nervous system, which consists of cell bodies (neuronal bodies), neuropils (clusters of unmyelinated axons, dendrites, glial cell offshoots), synapses, glial cells (astrocytes and oligodendrocytes), and capillaries.

6. In the brain there are also three membranes. T

7. The spinal cord performs three functions. F

The spinal cord has two main functions: reflexive and conductive

Объяснение    делала сама

Answer 2

Let's go through each statement one by one and determine if they are TRUE or FALSE, providing reasons for the false ones:

1. Gray matter has projections which are called horns.

   • TRUE. Gray matter in the spinal cord is divided into regions called horns, which are projections of gray matter. There are dorsal horns (posterior), ventral horns (anterior), and lateral horns (found in the thoracic and upper lumbar segments in some individuals).

2. Ventral roots and horns transmit the nerve impulse from the muscles to the brain.

   • FALSE. Ventral roots and horns are involved in transmitting nerve impulses from the brain and spinal cord to the muscles (motor signals), not from the muscles to the brain.

3. There are 35 segments in the spinal cord.

   • FALSE. The number of spinal cord segments can vary among individuals, but in general, there are 31 segments in the human spinal cord. These segments are typically divided into 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 coccygeal.

4. The dorsal roots and horns transmit information from sensitive cells, receptor cells, to the brain.

   • TRUE. Dorsal roots and dorsal horns are involved in transmitting sensory information from receptor cells (sensitive cells) in the body to the brain. This information includes sensations like touch, pain, and temperature.

5. Grey matter consists of bundles of neuron bodies and dendrites.

   • TRUE. Gray matter primarily consists of neuron cell bodies and their dendrites, which play a key role in information processing in the nervous system.

6. In the brain, there are also three membranes.

   • TRUE. The brain is surrounded by three membranes called meninges. These membranes are the dura mater, arachnoid mater, and pia mater. They protect and support the brain.

7. The spinal cord performs three functions.

   • FALSE. The spinal cord performs several functions, but it is often associated with three main functions: sensory transmission (receiving and transmitting sensory information to the brain), motor transmission (sending motor commands from the brain to muscles and glands), and reflexes (involuntary responses to stimuli). However, it also plays a role in coordination and integration of reflexes and some aspects of motor control. So, it can be involved in more than three functions.