The patellar reflex is the most common example or a spinal reflex. When the knee is tapped, the nerve that will receives this stimulus sends an impulse to the spinal cord and relay it to the motor nerve. This sources the quadriceps muscle at the front of the thigh to contract and twitch up the leg. This reflex contains simply two nerves and one synapse. The leg will start to twitch up on the other hand the brain is just suitable aware of the tap and comprehends the situation. Subsequently the tap, the leg is routinely lengthy once and comes to rest. The nonappearance of this reflex is problematical and recognized as westphals sign this reflex might be lessened or absent in lower motor neuron lesions and during sleep.

3 0

3 years ago

Sperm are the only human cells to have _____.

Delvig [45]

Answer:

flagella.

Explanation:

6 0

3 years ago

Match the organelle with its function. A. Instructions for protein synthesis and cell reproduction; contains genetic information

Jet001 [13]

Explanation :

A. Instructions for protein synthesis and cell reproduction; contains genetic information - Nucleus

B. Intracellular compartment forms transport vesicles; participates in lipid synthesis and synthesis of membrane or secreted proteins - Endoplasmic reticulum

C. Packages proteins for export from cell; forms secretory vesicle - Golgi apparatus.

D. Digest worn-out organelles and cell debris; digest material taken up by endocytosis - lysosomes

E. ""Power plants"" of the cell; sites of oxidative metabolism - Mitochondria

F. Sites of photosynthesis - chloroplasts

G. Regulates water levels in plant cells - vacuole

H. Used in break down of fats and contains the enzyme catalase - peroxisome

4 0

3 years ago

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